New HIV diagnoses in Jefferson County are about 77% lower than the US average. Whether it's your first STI test or a routine screening in Byrnes Mill, Missouri, consider both community and public clinics, which are often low-cost or free, and private labs, which typically offer faster results and more flexible scheduling. See your options below.
Available testing centers
9 testing options are listed for Byrnes Mill, MO. The nearest, Compass Health - House Springs, is about 1.6 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.
Compass Health - House Springs welcomes patients paying out of pocket, between insurance plans, or simply seeking affordable care without barriers. Federally qualified status ties its fees to a sliding scale based on income, making syphilis, gonorrhea, and chlamydia screening financially within reach. No appointment necessary.
Tests offered
Fees & payment
Compass Health in High Ridge carries full federal qualification as a community health center, which means fees scale to income and no one is turned away for inability to pay. STI screening here covers syphilis, gonorrhea, and chlamydia, with no appointment required to get tested.
Tests offered
Fees & payment
A community safety-net federally qualified health center about 5 miles from Byrnes Mill. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Fees & payment
Mercy-GoHealth Urgent Care in Eureka tests for gonorrhea, chlamydia, herpes, hepatitis A, B, and C, and TB on a sliding-scale fee structure accepting Medicaid and private insurance, with walk-ins welcome and same-visit treatment for bacterial infections.
Mercy-GoHealth Urgent Care in Eureka provides interpretation services through staff-coordinated language support during the visit itself, not patched in after the fact. That means symptom history, test results, and treatment instructions move through a live interpreter present in the clinical exchange, keeping accuracy inside the room.
Beyond gonorrhea and chlamydia, Mercy-GoHealth Urgent Care in Eureka runs testing for herpes, hepatitis A, hepatitis B, and hepatitis C alongside TB screening. All ordered and processed through the same urgent-care visit. Each result feeds directly into a provider review rather than routing through a separate specialty referral.
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
Compass Health Network in High Ridge functions as a community health center, weaving STI care into the same infrastructure as broader primary services: the standard bacterial panel plus rapid and conventional HIV testing, on a sliding scale with Medicaid and Medicare accepted, by appointment.
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 2 miles away; if you'd rather skip the trip, an at-home kit ships to Byrnes Mill, 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 for simplicity & support
$89 & up
Best range: couples & full panels
$79 & 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 Jefferson 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.
3783 Vogel Road, Arnold, MO 63010
CMS-certified lab
1500 Calvary Church Road Building A, Festus, MO 63028
CMS-certified lab
1000 North Truman Boulevard, Suite A, Crystal City, MO 63019
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Byrnes Mill. 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, 1,776 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Byrnes Mill. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 515 offer telehealth.
Jesse Helton, DO
Internal medicine · 100 Osage Executive Circle, Byrnes Mill
Linda Winterberger, DO
Family medicine · 4581 Gravois Road, House Springs
Raj Sajid, MD Telehealth
Family medicine · 1 Arbor Terrace, Fenton
Jawed Siddiqui, MD
Internal medicine · 1441 Charic Drive, Wildwood
Mitchell Elting, MD
Family medicine · 1345 Smizer Mill Road, Fenton
Jacob Yankowitz, DO
Family medicine · 1345 Smizer Mill Road, Fenton
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 Byrnes Mill, 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.
1.9 mi House Springs Pharmacy
2.1 miG.M. Sontag
3.1 mi
3.2 mi 
3.9 mi Showing the 5 closest pharmacies to Byrnes Mill, 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 Byrnes Mill, 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
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
$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
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 Jefferson County, the county that includes Byrnes Mill, compare with Missouri 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.
#55 of 115 Missouri counties for chlamydia, a higher rate than 52% of the state
| Infection | Jefferson County | Missouri | United States |
|---|---|---|---|
| Chlamydia | 237.9 550 cases ▼ 52% | 498.6 | 492.2 |
| Gonorrhea | 73.1 169 cases ▼ 64% | 201.9 | 179.5 |
| Syphilis (P&S) | 11.2 26 cases ▼ 48% | 21.5 | 15.8 |
| Syphilis (early) | 6.1 14 cases ▼ 51% | 12.4 | 16 |
| Syphilis (late/unknown) | 17.3 40 cases ▼ 49% | 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 Jefferson County, chlamydia has risen from 218.3 to 237.9 per 100,000 (9%), gonorrhea has fallen from 94.4 to 73.1 per 100,000 (23%), and P&S syphilis has risen from 4.4 to 11.2 per 100,000 (155%).
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 Jefferson 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.
Jefferson County HIV care continuum (2023)
Jefferson County recorded 3.1 new HIV diagnoses per 100,000 (2023), against 10.6 statewide and 13.7 nationally. Among Jefferson County residents living with HIV, 82.7% are in care · 73.3% 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.
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 Jefferson County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Those who stop by Byrnes Mill Park on a weeknight or weekend often know the rhythm of this place, people tending their yards, families settled into homes they plan to keep. That stability runs deep here, though it masks something many residents navigate quietly: the need for straightforward STI testing without fanfare or delay. Young adults in particular, balancing work and family plans, benefit from clinics and testing sites in and around Byrnes Mill where a visit stays between patient and provider, no questions asked and no record shared beyond what medical care requires. The working rhythm of Byrnes Mill means many people need testing windows that fit real schedules, lunch hours, after-shift stops, Saturday mornings.
Confidentiality isn't incidental; it's essential when you live where neighbors are also colleagues, where your choices stay your own. Testing listed on this page offers that separation: a chance to know your status without the weight of local visibility. For those in their twenties and thirties building lives here, routine screening is as practical as any other health step. The clinics and providers available locally understand that residents value both access and discretion, making it possible to prioritize sexual health without disrupting the life you've built in Byrnes Mill.
Getting there
At 6.82/20 on the EPA walkability index, day-to-day errands in Byrnes Mill 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 63025 snapshot
ZIP-level Census figures for the wider 63025 area around Byrnes Mill: a single ZIP can span several communities, so they describe the area, not Byrnes Mill alone.
Byrnes Mill sits in Jefferson County, ZIP 63025. Local context that shapes where residents test:
Local landmarks
Major routes
Nearby cities & towns
Just outside Byrnes Mill? 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 Jefferson 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 Byrnes Mill-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 Byrnes Mill 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.
Yes, several local labs offer same-day walk-in testing; best to call first.
Usually yes, it can be billed to insurance, or paid out of pocket at a flat rate.
Public health clinics nearby provide free testing.
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
Jefferson County reported ~238 chlamydia cases per 100,000 in 2023, below the Missouri average.
In Missouri, people under 18 can consent to confidential STD testing and treatment on their own.
Most results are ready in about 1–2 days.
Get treated, notify partners, pause sex until cleared, and follow up, the infection is manageable.
Reassuring if you tested after the window, just retest if it was early, and screen again with new partners.
Often, yes, especially throat and rectal infections, which is why site-specific testing matters.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.