In Sullivan County, Missouri, reported chlamydia runs about 33% lower than the US average. Whether it's your first STI test or a routine screening in Greencastle, Missouri, you can visit a clinic to get answers and start treatment or use an at-home kit for convenience. We list options below.
Available testing centers
6 testing options are listed for Greencastle, MO. The nearest, Sullivan County Memorial Hospital, is about 4.0 miles away. Compare 3 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 4 miles from Greencastle. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Northeast Missouri Health Council in Milan is a community health center where STI care sits alongside family planning and TB services: appointments required, sliding scale fees accepted by all, with same-visit treatment for bacterial infections and hepatitis A, B, and HPV vaccines on-site.
Languages
English
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Feb 2026 · Source: CDC NPIN
Sullivan County Health Department in Milan covers gonorrhea, chlamydia, syphilis, HIV, and hepatitis C: with every test free and Medicaid, Medicare, and private insurance all accepted. Same-visit treatment is available for bacterial STIs; an appointment is required.
Sullivan County Health Department charges nothing for any of its services, testing, treatment, vaccines, counseling. That zero cost extends to hepatitis A and B vaccination, meaning prevention and care land in the same visit without a bill following either one.
Spanish-language care at Sullivan County Health Department is staffed on-site: counseling, test results, and treatment conversations happen directly in Spanish without relay. That means clinical detail, not just scheduling, moves between provider and patient in a shared language.
The testing panel at Sullivan County Health Department runs to six infections: gonorrhea, chlamydia, syphilis, HIV, TB, and hepatitis C. Giving a fuller picture of bloodborne and sexual transmission risk in one appointment rather than parceling out hepatitis to a separate visit.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Dec 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 4 miles away; if you'd rather skip the trip, an at-home kit ships to Greencastle, 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 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 Sullivan 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.
630 West 3rd Street, Milan, MO 63556
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Greencastle. 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, 41 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Greencastle. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 5 offer telehealth.
Melanie Grgurich, MD
Family medicine · 52334 South Bus Hwy 5, Milan
Linda Baldwin, DO
Family medicine · Courthouse, Milan
Dale Essmyer, DO
Family medicine · 210 North Market Street, Milan
Azhar Assadi
Internal medicine · 315 South Osteopathy Avenue, Kirksville
Jill Kerr, DO
Family medicine · 800 West Jefferson Street, Kirksville
Melissa Mann, DO
Internal medicine · 800 West Jefferson Street, Kirksville
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 Greencastle, 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.
Nancy Kay Scott Et Al PTR
14 miQmi
14 miAm Home Medical Equipment and Supplies
14 mi
16 mi Elliott Pharmacy
16 miKuler Drugs
16 miShowing the 6 closest pharmacies to Greencastle, 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 Greencastle, 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 $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
$0 with most insurance
Free online PrEP & DoxyPEP: HIV prevention, home lab kits, no in-person visit
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 Sullivan County, the county that includes Greencastle, 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.
#32 of 115 Missouri counties for chlamydia, a higher rate than 72% of the state
| Infection | Sullivan County | Missouri | United States |
|---|---|---|---|
| Chlamydia | 327.8 19 cases ▼ 34% | 498.6 | 492.2 |
| Gonorrhea | 17.3 1 cases ▼ 91% | 201.9 | 179.5 |
| Syphilis (P&S) | — no data | 21.5 | 15.8 |
| Syphilis (early) | — no data | 12.4 | 16 |
| Syphilis (late/unknown) | — no data | 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 Sullivan County, chlamydia has fallen from 450.1 to 327.8 per 100,000 (27%), gonorrhea has fallen from 33.7 to 17.3 per 100,000 (49%), and P&S syphilis has held roughly steady from 17.1 to 17.1 per 100,000.
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 Sullivan 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.
Sullivan County HIV care continuum (2021)
Sullivan County recorded 0 new HIV diagnoses per 100,000 (2021), against 10.6 statewide and 13.7 nationally. Among Sullivan County residents living with HIV, 50% are in care · 50% 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 Sullivan County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Greencastle sits where MO 6 winds through farmland and open sky, a place where seasons shift visibly and routines anchor the year. For the young adults who live and work here, whether they've stayed or recently returned, STI screening fits as naturally into health care as any other preventive step, and the confidentiality that comes with testing holds particular weight in a town where many people know each other by sight or name. Routine screening doesn't require explanation or apology; it's a straightforward way to stay informed about sexual health without fanfare. Testing in and around Greencastle is listed on this page, with clinics and providers offering the privacy and clinical competence that routine care demands. Visits remain confidential by design, not exception.
Results and the fact of testing stay separate from casual conversation and workplace gossip. Whether you're navigating a new relationship, checking in after a period of uncertainty, or simply staying current with health maintenance, screening happens on your schedule and your terms. The landscape here is quiet and deliberate, and so is the approach to sexual health. Knowing your status, and acting on it if needed, is a choice available to anyone in this community, with the discretion and care the decision deserves.
Getting there
At 3.16/20 on the EPA walkability index, day-to-day errands in Greencastle 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 63544 snapshot
ZIP-level Census figures for the wider 63544 area around Greencastle: a single ZIP can span several communities, so they describe the area, not Greencastle alone.
Greencastle sits in Sullivan County, ZIP 63544. Local context that shapes where residents test:
Local landmarks
Major routes
Nearby cities & towns
Just outside Greencastle? 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 Sullivan 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 Greencastle-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 Greencastle 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 3 options within a 30-mile drive.
Yes, Medicaid typically covers it, and public clinics are free either way.
Sullivan County Health Department, about 14 mi away, provides free testing.
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
Sullivan County reported ~328 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.
A urine test or swab finds trichomoniasis, one of the most treatable STIs.
It can; oral HSV-1 transmits to the genitals during oral sex.
Go to an ER or call RAINN (800-656-4673); they provide testing, PEP, and support right away.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.