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STD Testing in Castle Rock, CO: Free, Same-Day & Confidential

New HIV diagnoses in Douglas County are about 75% lower than the US average, so regular testing in Castle Rock, Colorado remains vital if you've had a recent risk or simply test on a regular schedule. Decide whether to visit a clinic for provider support and treatment, or use an at-home kit for convenience and flexibility. See your options below.

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STD testing near Castle Rock, CO

12 testing options are listed for Castle Rock, CO. The nearest, Quest Diagnostics, is about 1.1 miles away. Compare community and public clinics, private labs, and at-home kits below.

How to read these listings

Listings tagged Community health center are federally funded health centers and rural clinics that treat everyone regardless of insurance or ability to pay: required to bill on a sliding fee scale and provide confidential care, and in many states minors may consent to their own STI testing. A Title X tag flags centers funded for confidential family-planning services; confirm current participation when you call.

Source: CMS FQHC & Rural Health Clinic enrollment files (data.cms.gov), refreshed quarterly. Title X status reflects the latest OPA grantee list.

Most reviewed 2.1 miles

Founders Family Medicine and Urgent Care

Where these reviews come from

Review sources

  • Google1,002
  • EasySTD5
Rated 4.4 out of 5 from 1007 reviews

Founders Family Medicine and Urgent Care in Castle Rock tests for gonorrhea, chlamydia, HIV, and hepatitis A, B, and C, treating any bacterial STI the same visit: with sliding-scale fees that apply to everyone, and all services available at no fee.

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No Fee for Every Service Offered Here

For anyone paying out of pocket (no insurance, no regular provider, no employer coverage) Founders Family Medicine and Urgent Care covers the full cost of every service it offers. Testing, vaccination, and treatment are each available at no charge, with sliding-scale fees as the floor and zero as the ceiling.

Hepatitis Testing Sits Beside the Standard Panel

Clinics running a standard STI panel typically stop at HIV, gonorrhea, chlamydia, and syphilis. Leaving hepatitis for a separate appointment elsewhere. Founders tests for hepatitis A, B, and C alongside conventional HIV testing, so a single visit covers infections that share transmission routes but rarely share a testing room.

Tests & treats
Address
4386 Trail Boss Drive, Castle Rock, CO 80104
Booking
Appointment required
Opening hours
  • Monday 8:00 AM – 8:00 PM
  • Tuesday 8:00 AM – 8:00 PM
  • Wednesday 8:00 AM – 8:00 PM
  • Thursday 8:00 AM – 8:00 PM
  • Friday 8:00 AM – 8:00 PM
  • Saturday 8:00 AM – 4:00 PM
  • Sunday 8:00 AM – 3:00 PM
Website
16.3 miles

Planned Parenthood of the Rocky Mountains

Where these reviews come from

Review sources

  • Google16
  • EasySTD2
Rated 3.2 out of 5 from 18 reviews

Planned Parenthood of the Rocky Mountains in Greenwood Village takes walk-ins for STI testing (HIV, syphilis, gonorrhea, chlamydia, herpes, and hepatitis A, B, and C) with same-visit treatment for bacterial infections, sliding-scale fees, and staff who communicate in American Sign Language and Spanish.

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ASL on Staff, Spanish Spoken Directly

Planned Parenthood of the Rocky Mountains in Greenwood Village has staff who communicate in American Sign Language and Spanish, with interpretation available for other languages, which means Deaf patients and non-English speakers get clinical conversations conducted in their own language, not mediated through workarounds.

Confidential Minor Care Is Standard Here

Many family planning providers leave minors reliant on a parent's coverage and the privacy exposure that comes with it. As a Title X clinic, Planned Parenthood of the Rocky Mountains in Greenwood Village provides legally confidential services to minors: meaning the visit, the test, and any treatment stay off a guardian's insurance explanation of benefits by law.

PrEP, PEP, and DoxyPEP Prescribed On-Site

Planned Parenthood of the Rocky Mountains in Greenwood Village prescribes PrEP, PEP, and DoxyPEP directly, so patients leave with an actual prevention regimen rather than a name to look up, and PrEP is available at no cost for those without insurance.

Tests & treats Title X Sliding-scale PrEP DoxyPEP
Address
8765 East Orchard, Unit 702 Greenwood Village, CO 80111
Opening hours
  • Monday 8:00 AM – 8:00 PM
  • Tuesday 8:00 AM – 6:30 PM
  • Wednesday 8:00 AM – 6:30 PM
  • Thursday 8:00 AM – 6:30 PM
  • Friday 8:00 AM – 6:30 PM
  • Saturday 8:00 AM – 1:45 PM
  • Sunday Closed
Website
17.3 miles

University of Colorado

Where these reviews come from

Review sources

  • Google195
  • EasySTD5
Rated 4.1 out of 5 from 200 reviews

University of Colorado in Aurora operates on a sliding-scale fee structure and accepts Medicaid, Medicare, and private insurance, making its full panel (gonorrhea, chlamydia, syphilis, conventional HIV, and hepatitis C) available at appointment-based visits with same-visit treatment for bacterial STIs.

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PrEP and PEP Prescribed On-Site in Aurora

University of Colorado carries both PrEP and PEP as standing clinical services, which means prevention medication can be initiated and managed without routing through a separate provider. That continuity keeps the gap between a conversation and an actual prescription as short as possible.

Hepatitis C Testing Alongside the Standard Four

For anyone without a regular primary care provider, or paying on the sliding scale and consolidating visits where they can, University of Colorado tests hepatitis C alongside gonorrhea, chlamydia, syphilis, and HIV in a single appointment. That breadth means a more complete picture of blood-borne and sexually transmitted risk from one place.

Tests & treats Sliding-scale PrEP
Address
5001 South Parker Road, Suite 215 Aurora, CO 80015
Booking
Appointment required
Opening hours
  • Monday 8:00 AM – 5:00 PM
  • Tuesday 8:00 AM – 5:00 PM
  • Wednesday 8:00 AM – 5:00 PM
  • Thursday 8:00 AM – 5:00 PM
  • Friday 8:00 AM – 5:00 PM
  • Saturday Closed
  • Sunday Closed
Website
18.4 miles

UCHealth

Where these reviews come from

Review sources

  • Google183
  • EasySTD5
Rated 4.4 out of 5 from 188 reviews

UCHealth in Aurora pairs bacterial STI testing (gonorrhea, chlamydia, syphilis) with same-visit treatment when results call for it, all on a fee schedule that accepts Medicaid, Medicare, and private insurance. Appointments are required, and care is available in Spanish.

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Spanish Delays Nothing at UCHealth

When a language gap means a question goes unasked or an instruction goes ununderstood, the downstream cost is a missed dose, a delayed diagnosis, or a partner not notified. At UCHealth Aurora, Spanish-language care is built into the clinical encounter itself, not sourced afterward, so nothing critical waits on a workaround.

PrEP Prescribed Here, Ongoing Care Included

UCHealth Aurora prescribes both PrEP and PEP directly, which means a patient who qualifies can leave with an active prevention plan rather than a name to look up elsewhere. That continuity keeps adherence, and therefore effectiveness, grounded in an established clinical relationship.

Herpes and Hepatitis Testing Beyond the Standard Four

For anyone without a regular provider, or paying out of pocket and wanting answers in a single visit, UCHealth Aurora's panel extends to herpes, hepatitis A, B, and C alongside the core bacterial and HIV tests, eliminating the need to piece together screening across multiple appointments.

Tests & treats PrEP
Address
16951 East Quincy Avenue, Aurora, CO 80015
Booking
Appointment required
Opening hours
  • Monday 7:20 AM – 4:30 PM
  • Tuesday 7:20 AM – 4:30 PM
  • Wednesday 7:20 AM – 4:30 PM
  • Thursday 7:20 AM – 4:30 PM
  • Friday 7:20 AM – 4:30 PM
  • Saturday Closed
  • Sunday Closed
Website
18.8 miles

Arapahoe County Public Health

Where these reviews come from

Review sources

  • Google17
  • EasySTD2
Rated 4.2 out of 5 from 19 reviews

Arapahoe County Public Health in Englewood tests for HIV, hepatitis C, syphilis, gonorrhea, and chlamydia (all at no charge, on a sliding scale) with same-visit treatment for bacterial infections and appointments required for scheduled care.

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Zero-Dollar Care Across Every Service Line

Fee-waived STI testing is common enough, but many clinics apply charges the moment care moves beyond the test itself. A vaccine, a treatment visit, a counseling session. At Arapahoe County Public Health, the no-fee policy holds across the board: testing, treatment, vaccines, and prevention services alike.

Spanish Spoken Directly, Not Routed Around

Arapahoe County Public Health maintains on-staff Spanish-language capability alongside broader interpretation services: meaning a conversation about PrEP, medication adherence, or a new diagnosis unfolds with full fluency rather than pauses and workarounds. That standing capacity is what makes follow-through on treatment plans realistic.

The clinic prescribes and manages all three preventive regimens (daily PrEP for HIV, PEP for post-exposure HIV prevention, and DoxyPEP for bacterial STI prevention) with medication adherence education built into the visit rather than handed off. Ongoing monitoring for PrEP, including required labs, is handled within the same clinical relationship.

Tests & treats PrEP DoxyPEP
Address
4857 South Broadway, Englewood, CO 80113
Booking
Appointment required
Opening hours
  • Monday 7:00 AM – 5:00 PM
  • Tuesday 7:00 AM – 5:00 PM
  • Wednesday 7:00 AM – 5:00 PM
  • Thursday 7:00 AM – 5:00 PM
  • Friday Closed
  • Saturday Closed
  • Sunday Closed
Website
Community health center 19.2 miles

Stride Community Health Center

Where these reviews come from

Review sources

  • Google203
  • EasySTD5
Rated 3.6 out of 5 from 208 reviews

Stride Community Health Center, a full-service community health center in Aurora, tests for gonorrhea, chlamydia, syphilis, and HIV, treating bacterial infections the same visit. Sliding-scale fees apply to everyone, and appointments are required.

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Standalone STI clinics typically test and treat, prevention prescriptions get handed off elsewhere. STRIDE writes PrEP and PEP prescriptions directly, keeping the entire prevention-to-treatment continuum inside one practice rather than splitting it across providers.

STRIDE runs hepatitis C antibody testing as part of its panel, plus administers hepatitis A and adult hepatitis B vaccines on-site. That means a single appointment can cover viral hepatitis screening and vaccination alongside syphilis, gonorrhea, chlamydia, and HIV. No separate lab visit required.

Tests & treats Sliding-scale PrEP
Address
15132 East Hampden Avenue, Suite G Aurora, CO 80014
Booking
Appointment required
Opening hours
  • Monday 7:30 AM – 5:30 PM
  • Tuesday 7:30 AM – 5:30 PM
  • Wednesday 7:30 AM – 5:30 PM
  • Thursday 7:30 AM – 5:30 PM
  • Friday 7:30 AM – 5:30 PM
  • Saturday Closed
  • Sunday Closed
Website
20.6 miles

Peak Health Family Medicine

Where these reviews come from

Review sources

  • Google185
  • EasySTD5
Rated 3.9 out of 5 from 190 reviews

Peak Health Family Medicine in Lakewood screens for HIV, syphilis, gonorrhea, chlamydia, and hepatitis C on a fee-based sliding scale accepted by Medicaid, Medicare, and most insurance: appointments required, with same-visit treatment available for bacterial infections and PrEP and PEP on hand for ongoing prevention.

Read full overview Show less

PrEP Prescribed and Managed In This Practice

Peak Health carries both PrEP, tenofovir-based daily oral regimens, and PEP within its regular prescribing scope, meaning monitoring labs, refills, and dosing adjustments stay with the same provider rather than splitting across separate care relationships. Keeping prevention and primary care in one chart simplifies the follow-up cadence that both regimens require.

Hepatitis C Testing Beyond the Standard Bacterial Four

Sexual health panels built around gonorrhea, chlamydia, syphilis, and HIV leave hepatitis C unaddressed. A gap that matters because hep C transmission through sexual contact is well documented. Peak Health Family Medicine adds hepatitis C to its panel, and any reactive result can be managed through the same practice rather than handed off.

Tests & treats PrEP
Address
5920 South Estes Street, Suite 250 Lakewood, CO 80123
Booking
Appointment required
Opening hours
  • Monday 8:00 AM – 5:00 PM
  • Tuesday 8:00 AM – 5:00 PM
  • Wednesday 8:00 AM – 5:00 PM
  • Thursday 8:00 AM – 5:00 PM
  • Friday 8:00 AM – 4:00 PM
  • Saturday Closed
  • Sunday Closed
Website
20.7 miles

Elbert County Public Health Clinic

No ratings yet

Elbert County Public Health Clinic in Kiowa tests for chlamydia, gonorrhea, syphilis, HIV, herpes, hepatitis A, B, and C, and tuberculosis. A wider net than most county clinics cast. Fees run on a sliding scale with Medicaid, Medicare, and private insurance accepted; appointments are required.

Tests & treats Sliding-scale
Address
75 Ute Avenue, PO Box 201 Kiowa, CO 80117
Booking
Appointment required
Opening hours
  • Monday 7:30 AM – 5:00 PM
  • Tuesday 7:30 AM – 5:00 PM
  • Wednesday 7:30 AM – 5:00 PM
  • Thursday 7:30 AM – 5:00 PM
  • Friday Closed
  • Saturday Closed
  • Sunday Closed
Website

Free tool · not a clinic

When can I test? Exposure-window calculator

Testing too soon can miss an infection. Enter the date of possible exposure to see the earliest a test can reliably detect each STI.

Detection windows for every STI
Infection Earliest reliable test Conclusive after
Chlamydia 7 days after exposure 14 days after exposure
Gonorrhea 7 days after exposure 14 days after exposure
Trichomoniasis 7 days after exposure 28 days after exposure
HIV (NAT / RNA) 10 days after exposure 33 days after exposure
HIV (4th-gen Ag/Ab) 18 days after exposure 45 days after exposure
HIV (antibody) 21 days after exposure 84 days after exposure
Syphilis 21 days after exposure 42 days after exposure
Hepatitis B 21 days after exposure 42 days after exposure
Hepatitis C 56 days after exposure 77 days after exposure
Herpes (HSV) 28 days after exposure 112 days after exposure

Guidance only, confirm timing with a clinician. A negative result before the conclusive date may need a repeat test.

Find your match in 10 seconds

What matters most to you?

What will it cost? Estimate your STD test

Typical out-of-pocket ranges by option, actual cost depends on which tests you need.

  • Public / community clinic

    Free HIV testing is common

    $0–$25
  • Private lab (self-pay)

    Never billed to insurance

    $24–$200
  • At-home kit

    Mailed to your door, private

    From $49
  • Doctor / urgent care

    Often $0 preventive with insurance

    $0–$50 copay

Rate this clinic

Rate what mattered to you, no account needed. Reviews are moderated before publishing.

Privacy & discretion
Wait time
Staff & comfort
Value for cost

Every other option

More ways to get tested in Castle Rock, CO

Beyond the dedicated testing centers above: at-home kits by mail, hospital labs certified for STI testing, local clinicians who can order a panel during a regular visit, pharmacies for self-test kits and prescriptions, and online PrEP & treatment.

At-home STD testing in Castle Rock, CO

The nearest testing center is about 1 mile away; if you'd rather skip the trip, an at-home kit ships to Castle Rock, you collect the sample privately, and mail it back to a CLIA-certified lab. Results come online in days, with a clinician available if anything is positive. Same labs as a clinic, no waiting room, and you can read how accurate at-home STD tests are before you order.

Want a free option first? The CDC-supported TakeMeHome (opens in a new tab) program mails free at-home HIV self-test kits, and, in many areas, free STI kits, to your door, with no insurance or payment needed. The paid kits below add broader panels and faster turnaround.

Every kit uses CLIA-certified labs. At-home testing is for screening; a reactive result should be confirmed and treated by a clinician. Prices and panels shown are illustrative and change often, confirm current details on the provider's site.

Other CLIA-certified labs near Castle Rock, CO

Beyond the public testing sites above, these federally certified (CLIA) labs serve Douglas County, each lab's town is shown on its card below. Many test through a doctor's order or by appointment rather than walk-in, so call ahead to confirm STD/STI testing and availability before visiting.

  • Adventhealth LAB

    2350 Meadows Boulevard, Castle Rock, CO 80109

    CMS-certified lab Accredited · College of American Pathologists

    • Full STD panel
  • Adventhealth LAB Oncology Castle Rock

    2360 Meadows Boulevard, Suite 300, Castle Rock, CO 80109

    CMS-certified lab Accredited · College of American Pathologists

    • Full STD panel
  • Rocky Mountain Men's Clinic 3 - Castle Rock

    718 Maleta Lane, Suite 201, Castle Rock, CO 80108

    CMS-certified lab

    • STD testing
  • Vanguard Medical Specialists

    1175 South Perry Street, Suite 220, Castle Rock, CO 80104

    CMS-certified lab

    • STD testing
  • South Denver Gastroenterology

    3911 Ambrosia Street, Suite 201, Castle Rock, CO 80109

    CMS-certified lab

    • STD testing

Showing the nearest 5 CLIA-certified labs.

Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Castle Rock. A CLIA certificate records only that a laboratory is federally certified — it does not confirm the site performs STD testing, nor its hours, price or access. Inclusion is not an endorsement; always call to verify.

Clinicians near Castle Rock, CO who may help arrange STD testing

Beyond dedicated clinics, 2,143 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Castle Rock. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 781 offer telehealth.

  • Baiju Abdulla, MD Telehealth

    General practice · 1 Oakwood Park Plz, Castle Rock

  • Brent Herron, MD

    Family medicine · 1001 South Perry Street, Castle Rock

  • Sarah Logan, MD

    OB-GYN · 1175 South Perry Street, Castle Rock

  • Belton Hallmark, MD Telehealth

    Family medicine · 1189 South Perry Street, Castle Rock

  • Troy Buchholz, MD Telehealth

    Family medicine · 4404 Barranca Lane, Castle Rock

  • John Campbell, MD

    Family medicine · 4386 Trail Boss Drive, Castle Rock

These are registry-listed clinicians, not dedicated STD-testing clinics. CMS records do not independently verify current licensure, testing services, availability, price, or new-patient status. Confirm each detail before booking. Source: CMS Doctors & Clinicians.

Pharmacies near Castle Rock, CO

No pharmacy near Castle Rock, CO publishes an STD-related service or holds a current CLIA testing certificate, so these are simply the closest. Contact a location directly to confirm counter hours, services, prices, and availability before visiting.

  • Itc Compounding and Natural Wellness

    0.8 mi
    Rx pickupCondoms / EC
  • Walgreens 0.8 mi
    Rx pickupOTC HIV self-testAt-home STI kitsPrEP/PEP fillsHPV & Hep B vaccinesCondoms / EC
  • Albertsons/Safeway 1.1 mi
    Rx pickupHPV & Hep B vaccinesCondoms / EC
  • Peak RX

    1.1 mi
    Rx pickupCondoms / EC

Showing the 4 closest pharmacies to Castle Rock, CO.

Directory records identify nearby pharmacies. Service, stock, price, and hours information is shown only when supported by current location-specific evidence.

PrEP, prevention & online treatment

Testing is one step. For residents of Castle Rock, telehealth covers the rest: HIV-prevention medication (PrEP) and DoxyPEP to lower future risk, and discreet online treatment if a result comes back positive. All prescribed by licensed U.S. clinicians.

Pricing varies by insurance and changes often, confirm on the provider's site. These services are not a substitute for emergency care.

STDs & HIV in Douglas County: the local picture

How reported STI rates in Douglas County, the county that includes Castle Rock, compare with Colorado and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~27% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.

#43 of 64 Colorado counties for chlamydia, a higher rate than 33% of the state

Reported STD rates per 100,000, Douglas County vs Colorado vs U.S.

Douglas County Colorado U.S. ▲▼ = Douglas County vs the state average
Infection Douglas County Colorado United States
Chlamydia
186.8 717 cases ▼ 57%
435.1 492.2
Gonorrhea
39.9 153 cases ▼ 69%
128.7 179.5
Syphilis (P&S)
4.2 16 cases ▼ 74%
16 15.8
Syphilis (early)
1.8 7 cases ▼ 83%
10.4 16
Syphilis (late/unknown)
7.8 30 cases ▼ 73%
28.4 29.5

Rates per 100,000 population, 2023. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis). Population figures: U.S. Census Bureau ACS. These figures are the latest available surveillance estimates. Bars are scaled to the highest rate shown.

Reading these numbers: reported case rates only count infections that were actually tested for and diagnosed, so they track local screening effort as much as true spread: a higher rate can reflect more testing, a lower one less. Either way, most STIs cause no symptoms, so treat the figures above as context rather than a verdict, and test on the CDC's schedule regardless of how your area looks.

Reported STD rates in Douglas County over time (per 100,000)

Chlamydia ▲ 0% vs 2022
Chlamydia Gonorrhea Syphilis (P&S)
0 125 250 2020202120222023

Between 2020 and 2023 in Douglas County, chlamydia has fallen from 210.9 to 186.8 per 100,000 (11%), gonorrhea has fallen from 43.6 to 39.9 per 100,000 (8%), and P&S syphilis has risen from 3.9 to 4.2 per 100,000 (8%).

The 2020 dip reflects reduced pandemic-era screening, not lower transmission. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis).

Community health context

What shapes testing access in and around Castle Rock, CO

Adults uninsured
7%
No routine checkup
26.2%
Binge drinking
19.1%
Frequent mental distress
15.5%
Depression
22.6%
Below poverty line
4.2%
Primary-care ratio
1,430 : 1
Douglas County
  • Social Vulnerability Index · 2nd percentile nationally

Sources: CDC PLACES (ZIP), County Health Rankings, CDC/ATSDR SVI, HRSA HPSA, HRSA MUA/P, Neighborhood Atlas ADI. Lower insurance coverage, fewer routine checkups, and a thin primary-care ratio all raise the value of low-cost public clinics and at-home testing in Douglas County.

Local HIV snapshot

HIV in Douglas County (2023)

People living with HIV
94 / 100k
New diagnoses (2023)
11cases countywide
On PrEP (coverage)
14.8%

Douglas County HIV care continuum (2023)

Douglas County recorded 3.4 new HIV diagnoses per 100,000 (2023), against 9.6 statewide and 13.7 nationally. Among Douglas County residents living with HIV, 81% are in care · 76.3% are virally suppressed. Early, routine testing is what moves these numbers: it is the entry point to PrEP, treatment, and viral suppression.

Sources: AIDSVu (Emory/Gilead) · CDC AHEAD · CDC AtlasPlus · CDC NCHHSTP AtlasPlus (county care continuum). The CDC recommends everyone aged 13–64 test for HIV at least once: every lab and clinic listed above offers HIV testing, and free rapid HIV testing is available at a local health department.

Pregnant or planning to be?

Congenital syphilis is the fastest-rising STI: what to test, and when

Congenital syphilis, passed from parent to baby in pregnancy, is the fastest-rising STI in the country. U.S. cases climbed from 2,163 in 2020 to 3,882 in 2023. It is almost entirely preventable: the CDC recommends a syphilis test at the first prenatal visit, and every clinic and lab listed for Douglas County tests for syphilis.

Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).

19 Sources

Local resources & officials

Data & references

About Castle Rock, CO

Founders Village wears the look of settled permanence: wide driveways, two-car garages, households that skew large and married, most residents owning the roof over their heads. That kind of stability shapes how people think about healthcare, including sexual health. When the dominant expectation is that life is managed and together, routine screening can feel like an admission that something is wrong rather than what it actually is: maintenance, the same category as a dental cleaning or an annual physical. That tension matters most for the younger adults in Castle Rock, people in their late teens and twenties who are forming relationships and navigating a town where the cost of living is real.

Even with Castle Rock's relatively strong employment picture, rent in the area runs well above national medians, and most of the households pulling six-figure incomes are doing so because two earners make it work. A long detour off East Wolfensberger Road or a midday trip down South Wilcox Street can mean a lost shift or a complicated childcare arrangement, which turns a simple blood draw into a logistical calculation. Crystal Valley Ranch residents, in particular, can check the listed clinics for the closest pickup point before scheduling, cutting the guesswork down to a single call.

Getting there

How residents reach STD testing in Castle Rock, CO

Walkability 6.85 / 20 · Below average

At 6.85/20 on the EPA walkability index, day-to-day errands in Castle Rock generally mean driving: plan on a car or rideshare to reach a clinic, and check each listing's hours and phone before you go.

Source: EPA National Walkability Index 2021.

Map of 12 STD & STI testing locations in Castle Rock, Colorado, EasySTD

ZIP 80104 snapshot

Residents
36,461
Median age
37
Median income
$131,359

ZIP-level Census figures for the wider 80104 area around Castle Rock: a single ZIP can span several communities, so they describe the area, not Castle Rock alone.

Castle Rock sits in Douglas County, ZIP 80104. Local context that shapes where residents test:

Local landmarks

  • Ridgeline Open Space
  • Rock Park
  • Centennial Park
  • Castle North Park
  • Festival Park
  • Castle Rock Museum

Neighborhoods & communities

  • Founders Village
  • Castle Oaks
  • Silver Heights
  • Crystal Valley Ranch

Major routes

  • 5th Street
  • North Wilcox Street
  • East Wolfensberger Road
  • South Wilcox Street
  • West Plum Creek Parkway

STD testing in Castle Rock, CO: screening, costs & privacy

Everything to know before you test in Douglas County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under Colorado law. If you have symptoms right now, our confidential symptom checker maps them to the tests worth considering.

Who should test, and when

CDC screening schedule + each infection's detection window

Who should get tested, and how often

Based on current CDC screening recommendations.

GroupTestsHow often
Everyone aged 13–64 HIV At least once
Sexually active women under 25 Chlamydia, gonorrhea Every year
Women 25+ with new or multiple partners Chlamydia, gonorrhea Every year
Pregnant people HIV, syphilis, hepatitis B & C, chlamydia Early in pregnancy
Gay & bisexual men (MSM) Chlamydia, gonorrhea, syphilis, HIV Every 3–6 months
Anyone who shares injection equipment HIV, hepatitis B & C At least yearly
All adults at least once Hepatitis C At least once

When to test: STD detection windows

Testing too early can return a false negative, confirm timing with a Castle Rock-area provider.

InfectionEarliest reliable testSample
Chlamydia 1–2 weeks Urine or swab
Gonorrhea 1–2 weeks Urine or swab
Trichomoniasis 1–4 weeks Urine or swab
HIV (NAT / RNA) 10–33 days Blood
HIV (4th-gen Ag/Ab) 18–45 days Blood
HIV (antibody) 3–12 weeks Blood / oral
Syphilis 3–6 weeks Blood
Hepatitis B 3–6 weeks Blood
Hepatitis C 8–11 weeks Blood
Herpes (HSV) 4–16 weeks (antibody); swab a sore Blood / swab

What each STD test costs

Medicare reference prices per lab test, a benchmark before you pay out of pocket

These are the federal Medicare reference prices for processing each lab test. Public clinics and the community health centers serving Castle Rock often test free or on a sliding scale; private labs and at-home kits bundle several tests into one fee. Use this as a per-test benchmark before you pay out of pocket, or see the full guide to STD test costs for insurance, free, and at-home options.

TestReference priceCPT / HCPCS
Chlamydia (NAAT) $47.80 87491
Gonorrhea (NAAT) $47.80 87591
Trichomoniasis (NAAT) $47.76 87661
HIV-1/2 antigen/antibody $26.87 87389
HIV-1/2 antibody $22.44 86703
Syphilis (RPR/VDRL) $5.61 86592
Syphilis (treponemal antibody) $17.49 86780
Herpes (HSV NAAT) $47.76 87529
Hepatitis B surface antigen $15.33 87340
Hepatitis C antibody $29.16 86803

Source: Medicare Clinical Laboratory Fee Schedule, CMS, 2025 rates (data.cms.gov). Reference rate for the lab assay only: a clinic visit, sample collection, or a bundled multi-test panel may cost more. Medicaid and most insurers cover STD screening at no out-of-pocket cost.

Confidentiality & consent in Colorado

Minor consent and partner treatment (EPT) under state law, plus how to test privately

Two things that actually depend on Colorado law: who can consent, and whether partners can be treated without their own visit. Everything else about testing privately is the same nationwide (see below).

Can a minor consent on their own?

In Colorado, a minor of any age can consent to confidential STI testing and treatment on their own, no parental permission is required.

Can my partner be treated too? (EPT)

Colorado permits Expedited Partner Therapy (EPT): if you test positive for chlamydia or gonorrhea, your provider can give you medication (or a prescription) to pass to your partner, no separate exam or appointment needed for them.

Keeping a test private works the same in every state. Whether an STD test shows on insurance (the EOB), how to test anonymously, and self-pay options that leave no insurance trail don’t change by location.

Learn more about confidential STD testing in Colorado

Source: Guttmacher Institute, Minors' Access to STI Services; CDC, Legal Status of Expedited Partner Therapy. General information, not legal advice.

STD testing FAQs for Castle Rock, CO

Answers to the questions people ask most before getting tested.

Can I get tested near Parker, CO instead?

Possibly, Parker, CO is close; compare it by distance against Quest Diagnostics.

Does insurance cover STD testing near Castle Rock, CO?

Most plans cover STD screening; a clinic or lab can bill insurance, or you can pay a flat self-pay price.

Where's free HIV testing around Castle Rock, CO?

Public clinics nearby offer free HIV testing.

Which tests are offered near Castle Rock, CO?

Local options test for Chlamydia, Gonorrhea, Syphilis, Herpes, Hepatitis A, Hepatitis B, Hepatitis C, Rapid HIV, a full panel covers the common ones.

How common is chlamydia in Douglas County?

About 187 cases per 100,000 residents (2023), below the Colorado average.

Can someone under 18 get tested in Colorado without a parent?

In Colorado, people under 18 can consent to confidential STD testing and treatment on their own.

Can I get PrEP near Castle Rock, CO?

PrEP (HIV-prevention medicine for HIV-negative people) is available locally, any provider can prescribe it.

How do at-home STD kits work near Castle Rock, CO?

You self-collect a sample at home, mail it in, and view results online, no clinic visit needed.

Should both partners test for chlamydia?

Yes, partners should test and be treated together to avoid passing it back and forth.

When is a gonorrhea test accurate?

Roughly 1–2 weeks after exposure gives a dependable gonorrhea result.

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