In St. Louis County, there are 16 syphilis cases per 100,000 people. If you live in Chesterfield, Missouri, and are deciding whether to get tested after a possible exposure or as part of routine care, consider that clinics may bill insurance or offer sliding-scale fees, while many private labs provide a flat self-pay price. See your options below.
Available testing centers
12 testing options are listed for Chesterfield, MO. The nearest, Quest Diagnostics, is about 1.4 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.
Mercy-GoHealth Urgent Care in Chesterfield accepts Medicaid and most insurance, with a fee for uninsured visits, and tests for gonorrhea, chlamydia, herpes, hepatitis A, B, and C, and TB: no appointment required, with same-visit treatment for bacterial infections and interpretation services available.
For anyone whose primary language isn't English, Mercy-GoHealth Urgent Care in Chesterfield keeps interpretation services available at the point of care, so symptom history, treatment instructions, and follow-up guidance are exchanged with full clarity, not approximation, during the same visit where testing and treatment happen.
Chasing down herpes or hepatitis results through a separate provider means a second copay, a scheduling gap, and a stretch of time when an active infection goes unaddressed. Mercy-GoHealth Urgent Care in Chesterfield runs hepatitis A, B, and C plus herpes alongside the bacterial panel, so nothing is deferred to another appointment.
Languages
English, Interpretation Services Available for Non-English Languages
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Sep 2025 · Source: CDC NPIN
Mercy in Chesterfield runs by appointment, so scheduling locks in time with a provider who can test for HIV, syphilis, gonorrhea, chlamydia, herpes, hepatitis A, B, and C, and TB, and treat bacterial infections the same visit, on a sliding-scale fee accepted alongside Medicaid, Medicare, and most insurance.
Leaving herpes or hepatitis A, B, or C undetected means carrying forward a diagnosis that a four-infection panel simply never surfaces. Mercy tests all three hepatitis strains alongside herpes in the same appointment, closing a gap that would otherwise require a separate lab order and an extra wait for results.
Mercy prescribes DoxyPEP, doxycycline taken after a potential bacterial STI exposure, directly at the clinic. Having that prescription written by the same provider who handles testing means the drug and the monitoring conversation happen in one coordinated appointment rather than across separate systems.
Languages
English
Tests offered
Care services
Prevention services
Fees & payment
Listing verified Dec 2025 · Source: CDC NPIN
Total Access Urgent Care in Chesterfield tests for gonorrhea, chlamydia, syphilis, herpes, hepatitis B, and HIV on a fee basis with insurance and Medicaid accepted: no appointment required, and bacterial infections can be treated the same visit.
Languages
English
Tests offered
Care services
Prevention services
Fees & payment
Listing verified Apr 2026 · Source: CDC NPIN
Compass Health in Weldon Spring welcomes walk-ins without an appointment, letting patients act on STI concerns the same day. Federally qualified standing anchors its sliding-scale fees to income, and a single visit can cover syphilis, gonorrhea, and chlamydia screening.
Tests offered
Fees & payment
Planned Parenthood Great Rivers in Manchester runs on a sliding scale, takes Medicaid and most insurance, and covers the full bacterial and viral panel (gonorrhea, chlamydia, syphilis, hepatitis B and C, herpes, and rapid or conventional HIV) with same-visit treatment for bacterial infections. Appointments required.
Planned Parenthood Great Rivers in Manchester offers services in Spanish and through interpretation for other languages, which means test results, treatment options, and prevention conversations happen with real comprehension, not approximation, on both sides.
As a Title X clinic, Planned Parenthood Great Rivers provides family planning services, including STI testing and treatment, that are legally confidential for minors, meaning a young person's records stay protected regardless of who holds their insurance.
Many STI clinics test and treat but send patients elsewhere for HIV prevention prescriptions. Planned Parenthood Great Rivers prescribes both PrEP and PEP directly, so ongoing prevention and acute response both stay with the same clinical team.
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
Saint Charles County Department of Public Health in St. Charles requires an appointment and covers HIV, syphilis, gonorrhea, chlamydia, hepatitis B, and hepatitis C, including a rapid hepatitis C option, with same-visit treatment for bacterial infections, all at no charge to anyone who walks through the door.
Sliding-scale models still attach a number to the visit once income is verified. At Saint Charles County Department of Public Health, that calculation doesn't exist. Every test, every vaccine, every treatment is provided at no fee, full stop.
Leaving hepatitis B or C undetected means a separate appointment somewhere else, or more likely, it goes undetected entirely. Saint Charles County Department of Public Health tests for both, including a rapid hepatitis C option, so those results come back during the same visit as your HIV, syphilis, gonorrhea, and chlamydia screen.
Languages
English
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Sep 2025 · Source: CDC NPIN
OSF HealthCare in Bridgeton charges a fee and accepts insurance for a panel covering rapid HIV, syphilis, gonorrhea, chlamydia, hepatitis B, hepatitis C, and TB. With same-visit treatment for bacterial STIs and appointments required.
OSF HealthCare prescribes and manages both PrEP, the daily antiretroviral regimen requiring regular HIV and kidney-function monitoring, and PEP, the post-exposure course. Both protocols stay within the clinic rather than being handed off, meaning the prescribing provider also tracks adherence and orders the follow-up labs the regimens require.
For anyone without a specialist or managing costs out of pocket, OSF HealthCare in Bridgeton provides hepatitis C treatment on-site. Not a test result and a next step elsewhere. The same clinic that runs the antibody test also manages the antiviral treatment, keeping the entire care sequence in one place.
Leaving hepatitis B or C undetected because the panel stopped at the core four means a separate appointment, separate billing, and a window where active infection goes unmanaged. OSF HealthCare's panel includes both hepatitis B and C alongside HIV, syphilis, gonorrhea, chlamydia, and TB, so a single visit surfaces infections that a narrower panel would have missed entirely.
Languages
English
Tests offered
Care services
Prevention services
Fees & payment
Listing verified Aug 2025 · Source: CDC NPIN
Compass Health Network in Saint Charles covers gonorrhea, chlamydia, syphilis, rapid and conventional HIV, hepatitis C, and TB. Bacterial infections treated the same visit. Fees run on a sliding scale, with Medicaid, Medicare, and most insurance accepted; appointments are required.
Languages
English
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Feb 2026 · 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 1 mile away; if you'd rather skip the trip, an at-home kit ships to Chesterfield, 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 St. Louis 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.
14532 South Outer 40 Road, Chesterfield, MO 63017
CMS-certified lab Accredited · College of American Pathologists
17300 North Outer 40, Suite 101, Chesterfield, MO 63005
CMS-certified lab Accredited · Joint Commission
13002 North Outer 40 Rd Suite 1C, Chesterfield, MO 63017
CMS-certified lab Accredited · College of American Pathologists
232 South Woods Mill Road, Chesterfield, MO 63017
CMS-certified lab Accredited · College of American Pathologists
15320 Conway Road, Chesterfield, MO 63017
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 Chesterfield. 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, 1,872 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Chesterfield. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 536 offer telehealth.
Monakka Afroz, MD
Family medicine · 17701 Edison Avenue, Chesterfield
Alan Howell, MD Telehealth
Infectious disease · 15740 South Outer 40 Road, Chesterfield
Melinda Auer, MD
OB-GYN · 16216 Baxter Road, Chesterfield
Michael Cannon, MD
Family medicine · 16216 Baxter Road, Chesterfield
Gayathri Raman Telehealth
Family medicine · 16216 Baxter Road, Chesterfield
John Mcneil, MD
Family medicine · 1722 Clarkson Road, Chesterfield
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 Chesterfield, MO 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.
0.7 mi Sam's Club Pharmacy
1.0 miBreezeway Pharmacy
1.2 mi
1.2 mi Sams Pharmacy 10
1.3 miClarkson Square Pharmacy
1.3 miShowing the 6 closest pharmacies to Chesterfield, MO.
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 Chesterfield, 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 $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
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
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 St. Louis County, the county that includes Chesterfield, compare with Missouri and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~19% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#5 of 115 Missouri counties for chlamydia, a higher rate than 96% of the state
| Infection | St. Louis County | Missouri | United States |
|---|---|---|---|
| Chlamydia | 635.3 6,271 cases ▲ 27% | 498.6 | 492.2 |
| Gonorrhea | 294.7 2,909 cases ▲ 46% | 201.9 | 179.5 |
| Syphilis (P&S) | 16 158 cases ▼ 26% | 21.5 | 15.8 |
| Syphilis (early) | 10 99 cases ▼ 19% | 12.4 | 16 |
| Syphilis (late/unknown) | 30 296 cases ▼ 11% | 33.8 | 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 St. Louis County, chlamydia has risen from 603.8 to 635.3 per 100,000 (5%), gonorrhea has fallen from 339.5 to 294.7 per 100,000 (13%), and P&S syphilis has risen from 15.5 to 16 per 100,000 (3%).
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 St. Louis County.
Local HIV snapshot
Federal priority area: Missouri is one of the U.S. jurisdictions prioritized under the Ending the HIV Epidemic initiative: targeted federal funding to expand local HIV testing, PrEP, and prevention.
St. Louis County HIV care continuum (2023)
St. Louis County recorded 14.7 new HIV diagnoses per 100,000 (2023), against 10.6 statewide and 13.7 nationally. Among St. Louis County residents living with HIV, 75.9% are in care · 65.4% 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 St. Louis County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Clarkson Road cuts through a Chesterfield built largely around households that own their homes and have done so long enough to put down roots. That stability shapes how health decisions get made here: in a community where nearly two-thirds of adults are married and households average close to three people, conversations about screening tend to happen inside families rather than through individual prompting alone. When one person schedules a test, partners and older children often follow.
That family-centered culture is a quiet asset, but it doesn't automatically reach young adults still in the earlier, more socially active years of their lives. People in their late teens and twenties represent a smaller share of Chesterfield's population than in many Missouri cities, yet those years carry the steepest risk for chlamydia, gonorrhea, and other common infections. For someone commuting along Avenue of the Saints or working irregular hours, the practical question is usually whether a listed option fits the day, not whether the person is motivated. With more than half of households here earning well into six figures, cost is less often the barrier than time and scheduling.
St. Louis County's STI figures reflect transmission patterns that reach every zip code and every income level, Chesterfield included. Staying current on screening is simply what keeps those county numbers from quietly climbing, one household at a time.
Getting there
At 8.73/20 on the EPA walkability index, day-to-day errands in Chesterfield 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 63017 snapshot
ZIP-level Census figures for the wider 63017 area around Chesterfield: a single ZIP can span several communities, so they describe the area, not Chesterfield alone.
Chesterfield sits in St. Louis County, ZIP 63017. Local context that shapes where residents test:
Local landmarks
Major routes
Nearby cities & towns
Just outside Chesterfield? 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 St. Louis County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under Missouri 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 Chesterfield-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 Chesterfield 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 Missouri 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 Missouri, a minor of any age can consent to confidential STI testing and treatment on their own, no parental permission is required.
Missouri 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 MissouriSource: 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.
There are 12 options within a 30-mile drive.
Usually yes, it can be billed to insurance, or paid out of pocket at a flat rate.
Yes, free HIV testing is available at public clinics in the area.
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
St. Louis County reported ~635 chlamydia cases per 100,000 in 2023, above the Missouri average.
At-home kits mail to 63017: self-collect, send to the lab, results in ~2–5 days.
In Missouri, people under 18 can consent to confidential STD testing and treatment on their own.
Yes, PrEP, a daily pill that helps prevent HIV in HIV-negative people, is available in the area.
Yes, site matters; oral/anal exposure needs a throat or rectal swab, which urine testing won't catch.
Reassuring if you tested after the window, just retest if it was early, and screen again with new partners.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.