Chlamydia rates in Twin Falls County run 21% lower than the US average. Whether you need testing after a possible exposure or as part of routine care in Castleford, Idaho, weigh your time, money, and convenience. Public clinics keep costs down, private labs prioritize speed, and at-home kits trade a clinic visit for convenience. Find your options below.
Available testing centers
5 testing options are listed for Castleford, ID. The nearest, North Canyon Medical Center, is about 7.9 miles away. Compare 2 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.
A safety-net rural health clinic about 8 miles from Castleford. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Family Health Services is a family practice in Buhl where fees slide to match income, with Medicaid, Medicare, and private insurance all accepted. The clinic tests for HIV, syphilis, gonorrhea, chlamydia, hepatitis B, and hepatitis C, treats bacterial infections the same visit, and offers care in Spanish.
Many clinics handle Spanish through patchwork arrangements that slow the visit down and flatten the conversation. At Family Health Services, Spanish moves through the actual clinical encounter (history, counseling, and treatment) without a layer in between.
For anyone without a regular primary care provider, or managing care out of pocket, having hepatitis B and hepatitis C testing available at the same appointment as gonorrhea, chlamydia, syphilis, and HIV means fewer separate visits to piece together a complete picture of liver and sexual health.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Sep 2025 · Source: CDC NPIN + HRSA
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 about 8 miles away; if you'd rather skip the trip, an at-home kit ships to Castleford, 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 range: couples & full panels
$79 & up
Best value: single tests
$49 & 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 Twin Falls 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.
120 Rose Street North, Twin Falls, ID 83301
CMS-certified lab
1411 Falls Avenue East #1002, Twin Falls, ID 83301
CMS-certified lab
844 North Washington Street North Suite 100, Twin Falls, ID 83301
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Castleford. 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, 98 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Castleford. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 16 offer telehealth.
Bryan Mason, MD
Family medicine · 980 Burley Avenue, Buhl
Laurence Hicks, DO Telehealth
Family medicine · 236 Martin Street, Twin Falls
Benjamin Romney, MD
Family medicine · 388 Martin Street, Twin Falls
Jarrett Lever, MD
Family medicine · 526 Shoup Avenue West, Twin Falls
Joseph Ippolito, MD
Family medicine · 526 Shoup Avenue West, Twin Falls
Mayben Johnson, DO
Family medicine · 526 Shoup Avenue West D, Twin Falls
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 Castleford, ID 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.
Buhl Drug
7.9 miFamily Health Services Buhl Pharmacy
8.0 miRidleys Pharmacy
8.0 miMedical Office Pharmacy
19 miDick's Pharmacy
20 miWendell Pharmacy
20 miShowing the 6 closest pharmacies to Castleford, ID.
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 Castleford, 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.
$0 with most insurance
Free online PrEP & DoxyPEP: HIV prevention, home lab kits, no in-person visit
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
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 Twin Falls County, the county that includes Castleford, compare with Idaho 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.
#6 of 44 Idaho counties for chlamydia, a higher rate than 86% of the state
| Infection | Twin Falls County | Idaho | United States |
|---|---|---|---|
| Chlamydia | 386.7 368 cases ▲ 31% | 294.9 | 492.2 |
| Gonorrhea | 38.9 37 cases ▼ 2% | 39.6 | 179.5 |
| Syphilis (P&S) | 3.2 3 cases ▼ 16% | 3.8 | 15.8 |
| Syphilis (early) | 1.1 1 cases ▼ 65% | 3.1 | 16 |
| Syphilis (late/unknown) | 5.3 5 cases ▼ 16% | 6.3 | 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 Twin Falls County, chlamydia has fallen from 412 to 386.7 per 100,000 (6%), gonorrhea has fallen from 46.6 to 38.9 per 100,000 (17%), and P&S syphilis has risen from 2.2 to 3.2 per 100,000 (45%).
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 Twin Falls County.
Local HIV snapshot
Twin Falls County HIV care continuum (2020)
Twin Falls County recorded 0 new HIV diagnoses per 100,000 (2020), against 3 statewide and 13.7 nationally. 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 Twin Falls County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Sunset Butte sits east of town as a quiet marker of how spread out Castleford really is, and that distance shapes something as practical as getting tested. The unemployment rate here is notably higher than most Idaho towns, and with typical home values among the lowest in the region, many households are managing costs carefully; that low median rent keeps the town accessible to younger adults still building financial footing, but it also signals that out-of-pocket testing fees can genuinely factor into a decision. Those younger adults, people in their late teens and twenties navigating new relationships and shifting living situations, are the ones for whom straightforward, low-cost access makes the most concrete difference.
Castleford leans heavily toward homeowners and married households, but that 38 percent who rent skews younger and tends to move more, which means STI exposure windows don't always align with a stable routine or a regular doctor. With options listed on this page serving the area in and around Castleford, the practical next step is checking which one fits the drive and whether appointment slots are open this week.
Getting there
At 4.53/20 on the EPA walkability index, day-to-day errands in Castleford 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 83321 snapshot
ZIP-level Census figures for the wider 83321 area around Castleford: a single ZIP can span several communities, so they describe the area, not Castleford alone.
Castleford sits in Twin Falls County, ZIP 83321. Local context that shapes where residents test:
Local landmarks
Nearby cities & towns
Just outside Castleford? 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 Twin Falls County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under Idaho 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 Castleford-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 Castleford 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 Idaho 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 Idaho, a minor aged 14 or older can consent to confidential STI testing and treatment on their own, no parental permission is required.
Idaho 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 IdahoSource: 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.
North Canyon Medical Center, about 7.9 mi away, with 2 options within 30 miles.
Yes, Medicaid typically covers it.
Public clinics serve people without insurance, often on a sliding scale.
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
Twin Falls County reported ~387 chlamydia cases per 100,000 in 2023, above the Idaho average.
In Idaho, people under 18 can consent to confidential STD testing and treatment on their own.
Most results are ready in about 1–2 days.
Telling recent partners lets them test and treat; many health departments offer confidential partner-notification help.
Little prep is needed, bring an ID and insurance if you have it, and note your exposure dates and any symptoms; for a urine test, avoid peeing for about an hour beforehand.
Clinics give immediate care and treatment; home kits win on convenience and discretion. Either works.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.