Chlamydia reported in Harris County in Texas run about 30% higher than the US average. If you've had a recent exposure or test regularly in Katy, Texas, you have choices: clinics may bill insurance or have sliding scales, while many private labs charge a flat self-pay price.
Available testing centers
9 testing options are listed for Katy, TX. The nearest, Spring Branch CHC - Katy Clinic, is about 0.9 miles away. Compare community and public clinics, private labs, and at-home kits below.
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.
Spring Branch CHC - Katy Clinic, serving Katy, earned its federal qualification by tying every fee to a patient's actual income. No one is turned away for inability to pay. Walk-in STI screening covers syphilis, gonorrhea, and chlamydia, with costs scaled to what you earn.
Tests offered
Fees & payment
Spring Branch Community Health Center in Katy covers rapid HIV, hepatitis C, syphilis, gonorrhea, and chlamydia testing with all services provided at no fee, insurance accepted, or Medicaid: walk-ins welcome, with same-visit treatment for bacterial infections and sliding-scale fees throughout.
Spring Branch Community Health Center charges nothing for its services, not for the rapid HIV test, not for STI treatment, not for counseling. That zero applies across the board, meaning cost is removed as a variable before anyone walks through the door.
Spanish functions as a primary service language at Spring Branch Community Health Center, not a supplemental accommodation. HIV counseling, STI education, and prevention conversations all run in Spanish, so clinical detail doesn't compress in translation.
When PrEP or PEP requires a separate provider referral, the gap between decision and prescription carries real risk. Spring Branch Community Health Center prescribes and manages both on-site, and covers PrEP for uninsured patients, so prevention isn't contingent on a second appointment.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Sep 2025 · Source: CDC NPIN + HRSA
West Houston Infectious Disease Associates in Katy requires appointments and operates on a fee-for-service, insurance-accepted basis. No sliding scale. One visit covers HIV, syphilis, gonorrhea, chlamydia, hepatitis B, and hepatitis C testing, with same-visit treatment for bacterial STIs and on-site management of PrEP and PEP.
General STI clinics routinely test and treat but hand off prevention prescribing to outside providers, leaving patients to chase a second appointment elsewhere. West Houston Infectious Disease Associates writes both PrEP and PEP prescriptions in-house, keeping prevention and treatment under the same clinical relationship.
West Houston Infectious Disease Associates treats hepatitis C on-site rather than stopping at diagnosis, which means a reactive result doesn't require a specialist referral before antiviral therapy can begin. That continuity shortens the time between detection and a documented cure.
The tested panel at West Houston Infectious Disease Associates covers six pathogens (HIV, syphilis, gonorrhea, chlamydia, hepatitis B, and hepatitis C) alongside hepatitis A and B vaccination. Catching hepatitis B at the same visit that surfaces a bacterial STI allows treatment timelines for both conditions to run concurrently.
Languages
English
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Jun 2026 · Source: CDC NPIN
Memorial Hermann-GoHealth Urgent Care in Katy folds STI testing into urgent-care infrastructure, meaning walk-ins are welcome any day without an appointment. The clinic runs a full panel on a fee-based, insurance-accepted model with Medicaid also on board, and treats bacterial infections the same visit.
Many urgent-care clinics leave non-English-speaking patients to manage complex health conversations with whatever bilingual help happens to be available. Memorial Hermann-GoHealth Urgent Care in Katy has interpretation services formally in place, so the clinical exchange (symptoms, results, next steps) moves in the language a person actually speaks.
A basic STI panel often stops at four infections and leaves patients to arrange hepatitis and herpes testing separately. At Memorial Hermann-GoHealth Urgent Care in Katy, herpes, hepatitis A, B, and C, and TB testing sit alongside the core panel. One visit covers exposures that often require a second appointment elsewhere.
Languages
English, Interpretation Services Available for Non-English Languages
Tests offered
Serves
Care services
Fees & payment
Listing verified May 2026 · Source: CDC NPIN
Brookshire Center, in Brookshire, carries federal qualification as a community health center, which means STI screening for syphilis, gonorrhea, and chlamydia runs on a sliding-scale fee tied to household income, keeping care within reach regardless of insurance status.
Tests offered
Fees & payment
Free tool · not a clinic
Testing too soon can miss an infection. Enter the date of possible exposure to see the earliest a test can reliably detect each 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.
Typical out-of-pocket ranges by option, actual cost depends on which tests you need.
Public / community clinic
Free HIV testing is common
Private lab (self-pay)
Never billed to insurance
At-home kit
Mailed to your door, private
Doctor / urgent care
Often $0 preventive with insurance
No centers match those filters. Clear the service-type filter or the opening-hours filters to see every center.
Every other option
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.
Test from home
The nearest testing center is less than a mile away; if you'd rather skip the trip, an at-home kit ships to Katy, 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.
In-home collection
$79 & up
Best value: single tests
$49 & up
Best for simplicity & support
$89 & up
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.
Also in the area
Beyond the public testing sites above, these federally certified (CLIA) labs serve Harris 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.
22430 Grand Corner Drive, Katy, TX 77494
CMS-certified lab Accredited · College of American Pathologists
23900 Katy Freeway, Katy, TX 77494
CMS-certified lab Accredited · College of American Pathologists
23920 Katy Freeway - Suite 560, Katy, TX 77494
CMS-certified lab
410 West Grand Parkway South, Suite 4A, Katy, TX 77494
CMS-certified lab
25230 Kingsland Boulevard, Suite 101, Katy, TX 77494
CMS-certified lab
Showing the nearest 5 CLIA-certified labs.
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Katy. 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.
Local clinicians
Beyond dedicated clinics, 3,069 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Katy. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 1,134 offer telehealth.
Wilson Moscoso Donoso, MD
Family medicine · 23910 Katy Freeway, Katy
Ahmad-Rabia Al-Khush, MD
Family medicine · 23920 Katy Freeway, Katy
Gregory Smith, DO
Family medicine · 23960 Katy Freeway, Katy
Benedict Ifedi, MD Telehealth
Family medicine · 23960 Katy Freeway, Katy
Amina Sayeed, MD
OB-GYN · 23290 Katy Freeway, Katy
Diego Aviles, MD
OB-GYN · 23900 Katy Freeway, Katy
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.
Nearby pharmacies
No pharmacy near Katy, TX 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.
Community Pharmacy
1.0 miPhlex RX
1.0 miBetter Life Pharmacy
1.0 miParadigm RX
1.1 mi
1.1 mi 
1.4 mi Showing the 6 closest pharmacies to Katy, TX.
Directory records identify nearby pharmacies. Service, stock, price, and hours information is shown only when supported by current location-specific evidence.
Prevention & treatment
Testing is one step. For residents of Katy, 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.
Visit from $0 insured
Telehealth STI treatment and sexual-health care, delivered or to your pharmacy
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
Visit from $39
Online STI treatment & DoxyPEP: same-day prescriptions to your pharmacy
$0 with most insurance
Free online PrEP & DoxyPEP: HIV prevention, home lab kits, no in-person visit
Pricing varies by insurance and changes often, confirm on the provider's site. These services are not a substitute for emergency care.
STD stats & rates
How reported STI rates in Harris County, the county that includes Katy, compare with Texas and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~24% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#13 of 254 Texas counties for chlamydia, a higher rate than 95% of the state
| Infection | Harris County | Texas | United States |
|---|---|---|---|
| Chlamydia | 641.4 31,014 cases ▲ 30% | 491.9 | 492.2 |
| Gonorrhea | 240.6 11,631 cases ▲ 36% | 176.4 | 179.5 |
| Syphilis (P&S) | 28.2 1,363 cases ▲ 88% | 15 | 15.8 |
| Syphilis (early) | 40.8 1,975 cases ▲ 55% | 26.4 | 16 |
| Syphilis (late/unknown) | 57 2,756 cases ▲ 29% | 44.3 | 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.
Between 2020 and 2023 in Harris County, chlamydia has risen from 528.4 to 641.4 per 100,000 (21%), gonorrhea has risen from 239.6 to 240.6 per 100,000 (0%), and P&S syphilis has risen from 13.3 to 28.2 per 100,000 (112%).
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
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 Harris County.
Local HIV snapshot
Federal priority area: Harris County is one of 48 U.S. counties prioritized under the Ending the HIV Epidemic initiative: targeted federal funding to expand local HIV testing, PrEP, and prevention.
Harris County HIV care continuum (2023)
Harris County recorded 33.4 new HIV diagnoses per 100,000 (2023), against 20.2 statewide and 13.7 nationally. Among Harris County residents living with HIV, 86.7% know their status · 75.2% are in care · 65.1% 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.
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 Harris County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Silver Ranch and Ironwood Estates read like classic Texas family suburbs, wide lots, two cars in the driveway, households bigger than the national norm. That settled, ownership-heavy character shapes how people here move through daily life: most adults are juggling work commutes on I-10 or Pin Oak Road, school pickups, and the kind of packed schedules that make a mid-afternoon clinic visit feel like a logistical puzzle. Cost can be. With roughly a fifth of residents renting at around a thousand dollars a month and an unemployment rate that leaves a noticeable share of working-age people between paychecks, an unexpected clinic bill is a real deterrent.
Many of the options on this page offer sliding-scale or low-cost visits, which removes that particular barrier before it becomes a reason to wait. For the sizable share of households earning well above median, the bigger hurdle is usually time, not money, which is exactly why the mix of clinics within reach of Highway Boulevard includes same-day and extended-hours appointments. Knowing those options exist before you need them is what keeps a routine test from getting indefinitely postponed.
Getting there
At 7.07/20 on the EPA walkability index, day-to-day errands in Katy 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.
ZIP 77494 snapshot
ZIP-level Census figures for the wider 77494 area around Katy: a single ZIP can span several communities, so they describe the area, not Katy alone.
Katy sits in Harris County, ZIP 77494. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Major routes
Nearby cities & towns
Just outside Katy? These nearby communities have their own testing guides: clinics, at-home kits, and free screening close to home.
Reference
Everything to know before you test in Harris County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under Texas law. If you have symptoms right now, our confidential symptom checker maps them to the tests worth considering.
Based on current CDC screening recommendations.
| Group | Tests | How 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 |
Testing too early can return a false negative, confirm timing with a Katy-area provider.
| Infection | Earliest reliable test | Sample |
|---|---|---|
| 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 |
These are the federal Medicare reference prices for processing each lab test. Public clinics and the community health centers serving Katy 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.
| Test | Reference price | CPT / 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.
Two things that actually depend on Texas 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).
In Texas, a minor of any age can consent to confidential STI testing and treatment on their own, no parental permission is required.
Texas 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 TexasSource: Guttmacher Institute, Minors' Access to STI Services; CDC, Legal Status of Expedited Partner Therapy. General information, not legal advice.
Good to Know
Answers to the questions people ask most before getting tested.
Possibly, Fulshear, TX is close; compare it by distance against Spring Branch CHC - Katy Clinic.
Medicaid generally covers STD testing, and public clinics test for free regardless of coverage.
Yes, community and public clinics test the uninsured, with sliding-scale fees.
Local options test for Chlamydia, Gonorrhea, Syphilis, Herpes, Hepatitis A, Hepatitis B, Hepatitis C, Rapid HIV, a full panel covers the common ones.
About 641 cases per 100,000 residents (2023), above the Texas average.
PrEP (HIV-prevention medicine for HIV-negative people) is available locally, any provider can prescribe it.
In Texas, people under 18 can consent to confidential STD testing and treatment on their own.
Start treatment, tell recent partners so they can test, avoid sex until cleared, and retest if advised, most STIs resolve with care.
Likely yes, if you were past the window period; otherwise retest, and keep up routine screening with new partners.
Resistance is rising, which is why the CDC advises a particular treatment; don't self-treat, get tested and treated correctly.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.