Madison County reports about 442 chlamydia cases per 100,000 residents, near the US average. Whether you have symptoms and live in Troy, Illinois or just want peace of mind, you can weigh using local clinics or private labs. Clinics often bill insurance or offer sliding-scale fees. Private labs let you pay a flat self-pay price.
Available testing centers
9 testing options are listed for Troy, IL. The nearest, Quest Diagnostics, is about 1.0 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.
Chestnut Family Health Center in Maryville welcomes walk-in patients for STI screening without an appointment. Federally qualified status anchors its sliding-scale fee structure, so costs adjust to income for anyone who walks through the door. A single visit can cover syphilis, gonorrhea, and chlamydia testing.
Tests offered
Fees & payment
SIHF Healthcare in Glen Carbon bases visit costs on a sliding income scale, meaning fees adjust to what patients can actually afford. Federal qualification backs that commitment. Walk-ins are welcome for STI screening covering syphilis, gonorrhea, and chlamydia.
Tests offered
Fees & payment
SIHF Healthcare – Central Collinsville serves Collinsville residents who are between providers, paying cash, or working with limited incomes through its federally qualified health center model and mandatory sliding-scale fees. Walk-ins are welcome for syphilis, gonorrhea, and chlamydia screening, with costs scaled to what patients actually earn.
Tests offered
Fees & payment
Planned Parenthood of the St. Louis Region and Southwest Missouri in Fairview Heights tests for gonorrhea, chlamydia, syphilis, herpes, and HIV on a sliding-scale fee that applies to everyone; appointments are required, and bacterial infections are treated the same visit.
Spanish-language care and interpretation for other languages are built into the clinical encounter at this Fairview Heights location, not patched in at the front desk. For anyone whose primary language isn't English, that means history, diagnosis, and treatment options land in the words they actually use to make decisions.
Many family planning providers aren't bound to protect a minor's privacy from a parent or guardian, Planned Parenthood of the St. Louis Region and Southwest Missouri is, through its Title X designation, which makes those services legally confidential for patients under 18.
This clinic prescribes both PrEP and PEP directly, which means ongoing prevention medication or a time-sensitive post-exposure course doesn't require a separate provider or a second intake process.
Languages
English, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified May 2026 · Source: CDC NPIN
SIHF Healthcare – O'Fallon welcomes patients without an appointment, letting anyone walk in to access federally backed sliding-scale STI screening for syphilis, gonorrhea, and chlamydia. Ryan White–funded HIV care further extends what a single visit can address, with fees adjusted to income for all.
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 about 1 mile away; if you'd rather skip the trip, an at-home kit ships to Troy, 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 Madison 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.
12866 Troxler Avenue, Highland, IL 62249
CMS-certified lab Accredited · College of American Pathologists
2800 College Avenue, Alton, IL 62002
CMS-certified lab
4575 Benes Street, Glen Carbon, IL 62034
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Troy. 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, 1,388 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Troy. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 342 offer telehealth.
Eric Lopatin, MD
Family medicine · 301 Edwardsville Road, Troy
Michael Mandis, MD
Internal medicine · 6955 State Route 162, Maryville
Eddie Paulk, DO
Internal medicine · 6812 State Route 162, Maryville
James Dalla Riva, MD
OB-GYN · 6812 State Rd 162, Maryville
Asim Razzaq, MD Telehealth
Urology · 6812 State Route 162 200, Maryville
Thomas Hulsen, MD
OB-GYN · 6810 State Route 162, Maryville
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 Troy, IL 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.
Prescriptions Plus
0.4 mi
0.5 mi Genoa Healthcare
2.9 miMaryville Pharmacy
3.2 mi
4.5 mi Showing the 5 closest pharmacies to Troy, IL.
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 Troy, 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.
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
Visit from $0 insured
Telehealth STI treatment and sexual-health care, delivered or to your pharmacy
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 Madison County, the county that includes Troy, compare with Illinois and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~23% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#21 of 102 Illinois counties for chlamydia, a higher rate than 79% of the state
| Infection | Madison County | Illinois | United States |
|---|---|---|---|
| Chlamydia | 441.9 1,161 cases ▼ 21% | 557.7 | 492.2 |
| Gonorrhea | 160.2 421 cases ▼ 21% | 202.3 | 179.5 |
| Syphilis (P&S) | 17.5 46 cases ▲ 51% | 11.6 | 15.8 |
| Syphilis (early) | 5.7 15 cases ▼ 48% | 10.9 | 16 |
| Syphilis (late/unknown) | 17.1 45 cases ▼ 34% | 26 | 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 Madison County, chlamydia has fallen from 448 to 441.9 per 100,000 (1%), gonorrhea has fallen from 208.4 to 160.2 per 100,000 (23%), and P&S syphilis has risen from 7.5 to 17.5 per 100,000 (133%).
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 Madison County.
Local HIV snapshot
Madison County HIV care continuum (2023)
Madison County recorded 6.7 new HIV diagnoses per 100,000 (2023), against 14.7 statewide and 13.7 nationally. Among Madison County residents living with HIV, 79.1% are in care · 64.5% 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 Madison County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
US 40 cuts straight through Troy, and for most residents a clinic visit means getting in the car and driving out toward Edwardsville or beyond, since the options listed on this page serve the broader area rather than sitting at a Troy address. That drive is a real consideration when work schedules are tight, and with nearly two-thirds of adults in the labor force and unemployment barely registering, the practical constraint here is time, not joblessness. Troy skews strongly toward ownership and established households: roughly three in four residents own their homes, and the majority of adults are married, with households averaging just over three people. That family-oriented profile can create a quiet assumption that routine health maintenance, including STI screening, is something for other life stages.
It isn't. A meaningful share of Troy's population falls in the late-teens-and-twenties window when new relationships, partner changes, and asymptomatic infections make regular testing genuinely useful, not just a precaution for unusual circumstances. Chinatown and Mockingbird Hills residents alike tend to have a car and a reason to be on IL 162 or US 40 already. The more relevant question is whether a screening visit gets slotted in before the next thing on the calendar crowds it out, and for the renters managing on $818 a month, low-cost options on this list carry real weight.
Getting there
At 5.94/20 on the EPA walkability index, day-to-day errands in Troy 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 62294 snapshot
ZIP-level Census figures for the wider 62294 area around Troy: a single ZIP can span several communities, so they describe the area, not Troy alone.
Troy sits in Madison County, ZIP 62294. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Major routes
Nearby cities & towns
Just outside Troy? 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 Madison County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under Illinois 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 Troy-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 Troy 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 Illinois 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 Illinois, a minor aged 12 or older can consent to confidential STI testing and treatment on their own, no parental permission is required.
Illinois 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 IllinoisSource: 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, Edwardsville, IL is close; compare it by distance against Quest Diagnostics.
Most plans cover STD screening; a clinic or lab can bill insurance, or you can pay a flat self-pay price.
Yes, public clinics in the area offer free or low-cost testing.
Local options test for Chlamydia, Gonorrhea, Syphilis, Herpes, Hepatitis A, Hepatitis B, Hepatitis C, Rapid HIV, a full panel covers the common ones.
About 442 cases per 100,000 residents (2023), below the Illinois average.
In Illinois, people under 18 can consent to confidential STD testing and treatment on their own.
PrEP (HIV-prevention medicine for HIV-negative people) is available locally, any provider can prescribe it.
Lab results typically come back in 1–2 days.
Start treatment, tell recent partners so they can test, avoid sex until cleared, and retest if advised, most STIs resolve with care.
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.