In St. Louis County, reported chlamydia cases run about 29% higher than the US average. Before starting a new relationship or as part of ongoing care in Marlborough, Missouri, you have options: some clinics take walk-ins for same-day testing, while labs and at-home kits let you plan around your own time. Review your options in the list below.
Available testing centers
7 testing options are listed for Marlborough, MO. The nearest, Quest Diagnostics, is about 1.3 miles away. Compare community and public clinics, private labs, and at-home kits below.
Mercy in Webster Groves runs on appointments and delivers same-visit treatment for bacterial STIs (gonorrhea, chlamydia, syphilis) alongside rapid and conventional HIV testing. Fees slide based on income, with Medicaid, Medicare, and most insurance accepted, and donations welcomed.
Plenty of clinics cap their testing at gonorrhea, chlamydia, syphilis, and HIV and leave everything else to a specialist. Mercy adds herpes, hepatitis A, hepatitis B, and hepatitis C to the same visit, plus TB, so a single appointment covers infections that would otherwise require a separate referral and scheduling cycle.
Mercy prescribes DoxyPEP directly, which means patients who qualify leave with a concrete prevention strategy rather than guidance and a separate appointment to pursue it somewhere else.
Languages
English
Tests offered
Care services
Prevention services
Fees & payment
Listing verified Dec 2025 · Source: CDC NPIN
Total Access Urgent Care in St. Louis runs rapid HIV, syphilis, gonorrhea, chlamydia, herpes, and hepatitis B tests on a walk-in basis, accepting Medicaid, Medicare, and most insurance, with a standard fee for those paying directly. No appointment needed.
Languages
English
Tests offered
Care services
Prevention services
Fees & payment
Listing verified Apr 2026 · Source: CDC NPIN
Mercy-GoHealth Urgent Care in Crestwood accepts Medicaid and most insurance, with fees for uninsured patients, covering gonorrhea, chlamydia, herpes, hepatitis A, B, and C, and TB: walk-ins welcome, with same-visit treatment for bacterial infections and interpretation services available.
Interpretation services are available for non-English speakers at Mercy-GoHealth Urgent Care, which means symptom history and treatment instructions move between clinician and patient with full accuracy. Reducing the chance that something clinically significant gets lost or misunderstood.
Beyond gonorrhea and chlamydia, Mercy-GoHealth Urgent Care tests for herpes and for hepatitis A, B, and C (each requiring its own distinct assay, whether a type-specific IgG blood draw for herpes or antigen and antibody markers for the hepatitis panel) all ordered and collected on-site in a single visit.
Languages
English, Interpretation Services Available for Non-English Languages
Tests offered
Serves
Care services
Fees & payment
Listing verified Dec 2025 · Source: CDC NPIN
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 Marlborough, 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.
9985 Lin Ferry Drive, Saint Louis, MO 63123
CMS-certified lab
9556 Manchester Road, Saint Louis, MO 63119
CMS-certified lab
8567 Watson Road, Suite A, Webster Groves, MO 63119
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Marlborough. 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, 1,992 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Marlborough. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 547 offer telehealth.
Michelle Burk, DO
Internal medicine · 723 South Laclede Station Road, Saint Louis
Walter Lin, MD
Internal medicine · 723 South Laclede Station Road, Webster Groves
Brian Bergfeld, MD Telehealth
Internal medicine · 7419 Watson Road, Saint Louis
Alexa Williams, MD
OB-GYN · 7345 Watson Road, Saint Louis
Athmaram Shetty, MD Telehealth
Internal medicine · 7345 Watson Road, Saint Louis
Hany Salama, MD
Internal medicine · 8790 Watson Road, Saint Louis
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 Marlborough, 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.
0.1 mi Tomlyn
1.0 mi
1.0 mi 
1.1 mi Showing the 4 closest pharmacies to Marlborough, 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 Marlborough, 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
$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
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 St. Louis County, the county that includes Marlborough, compare with Missouri and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~48% 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
Watson Road cuts through the middle of Marlborough's daily rhythm, and for most residents that rhythm runs on a renter's budget: the overwhelming majority of households here lease rather than own, and typical monthly rent leaves little cushion for discretionary health spending. That financial reality is worth naming plainly: when a test costs money that isn't earmarked for anything, it tends to wait. It doesn't have to. A genuine advantage in a community where nearly four in five working-age adults are in the labor force but unemployment runs meaningfully higher than the national norm.
People balancing job searches or irregular hours alongside household responsibilities (Marlborough averages more than two people per home, and fewer than a quarter of adults are married, meaning many are navigating those responsibilities solo) rarely have the luxury of planning far ahead. Short-notice or drop-in testing makes a concrete difference for that group. Marlborough also skews strikingly young, and people in their late teens and twenties are precisely the age range where regular, routine screening does the most preventive work. With Francis Park and Lindenwood Park anchoring the neighborhood's social life, that's a lot of people who'd benefit from knowing where their nearest listed option actually sits on the map before they need it.
Getting there
Marlborough scores 12.87/20 on the EPA walkability index, so many trips are walkable or a short ride, though a car still gives you the widest choice of testing centers.
Source: EPA National Walkability Index 2021.
ZIP 63123 snapshot
ZIP-level Census figures for the wider 63123 area around Marlborough: a single ZIP can span several communities, so they describe the area, not Marlborough alone.
Marlborough sits in St. Louis County, ZIP 63123. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Major routes
Nearby cities & towns
Just outside Marlborough? 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 Marlborough-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 Marlborough 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.
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.
Most results are ready in about 1–2 days.
In Missouri, people under 18 can consent to confidential STD testing and treatment on their own.
At-home kits mail to 63123: self-collect, send to the lab, results in ~2–5 days.
Your results are part of your HIPAA-protected medical record; you can ask any clinic about its own privacy practices.
No real difference for testing, "STI" is just the current term for what used to be called "STD."
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.