Syphilis cases in Madison County run about 34% lower than the US average. Whether it's your first STI test or a routine screening in Harrison, Montana, public clinics keep costs down, private labs prioritize speed, and at-home kits trade a clinic visit for convenience. Look below for your options.
Available testing centers
1 testing option is listed for Harrison, MT. The nearest, Tri Med Services, is about 34.8 miles away. Compare private labs and at-home kits below.
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 35 miles away; if you'd rather skip the trip, an at-home kit ships to Harrison, 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 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.
321 Madison Street, Sheridan, MT 59749
CMS-certified lab
305 North Main Street, Ennis, MT 59729
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Harrison. 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, 7 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Harrison. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit.
Bryanna Cordeiro, MD
Family medicine · 305 North Main Street, Ennis
Jessica Svingen, DO
Family medicine · 321 Madison Street, Sheridan
Alec Kerins, MD
Family medicine · 321 Madison Street, Sheridan
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 Harrison, MT 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.
Pharmfill
17 miThree Forks Family Pharmacy
17 miWhitehall Pharmacy
19 miEnnis Pharmacy and Yesterday's Soda Fountain
25 miButte Silver Bow Primary Health Care Clinic
26 miCampbell's Drug
28 miShowing the 6 closest pharmacies to Harrison, MT.
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 Harrison, 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
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
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 Harrison, compare with Montana and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~24% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#44 of 56 Montana counties for chlamydia, a higher rate than 21% of the state
| Infection | Madison County | Montana | United States |
|---|---|---|---|
| Chlamydia | 84 8 cases ▼ 74% | 322.6 | 492.2 |
| Gonorrhea | — no data | 67.7 | 179.5 |
| Syphilis (P&S) | 10.5 1 cases ▼ 62% | 27.5 | 15.8 |
| Syphilis (early) | — no data | 12.4 | 16 |
| Syphilis (late/unknown) | — no data | 27.2 | 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 139.2 to 84 per 100,000 (40%), gonorrhea has risen from 23.2 to 33.6 per 100,000 (45%), and P&S syphilis has fallen from 11.6 to 10.5 per 100,000 (9%).
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 (2022)
Madison County recorded 0 new HIV diagnoses per 100,000 (2022), against 3 statewide and 13.7 nationally. Among Madison County residents living with HIV, 100% are in care · 80% 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
Harrison sits far enough from the nearest clinic that getting tested is never quite a spontaneous errand, it's a trip you plan, which means the options listed on this page matter more here than they would in a denser place. That practical distance shapes everything about how residents approach preventive care, and it's worth naming plainly. The town's ownership rate tells part of the story: most households here have put down roots rather than passing through, and more than half of adults are married. Meaning the population skews toward settled life-stages.
Average households run larger than the national norm, suggesting families with children and multigenerational arrangements are common. But younger adults still forming relationships, people in their late teens and twenties who account for a meaningful share of Madison County's STI burden, live inside that same stable-seeming landscape, and their needs don't disappear because the town feels rooted. Low labor-force participation, spread across a rural county, also means schedules aren't always the nine-to-five kind that clinic hours are built around, which is exactly why having options listed here (varying in hours, cost, and distance) changes what's actually reachable. For a household in Harrison, testing fits less like a clinic visit and more like any other county errand: bundled with a drive already on the calendar, chosen by which option fits the day's route.
Getting there
At 4.28/20 on the EPA walkability index, day-to-day errands in Harrison 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 59735 snapshot
ZIP-level Census figures for the wider 59735 area around Harrison: a single ZIP can span several communities, so they describe the area, not Harrison alone.
Nearby cities & towns
Just outside Harrison? 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 Montana 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 Harrison-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 Harrison 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 Montana 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 Montana, a minor of any age can consent to confidential STI testing and treatment on their own, no parental permission is required.
Montana 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 MontanaSource: 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.
The closest is Tri Med Services (34.8 mi).
Medicaid generally covers STD 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 84 cases per 100,000 residents (2023), below the Montana average.
Yes, at-home kits ship to 59735; you collect a sample, mail it back, and get results in about 2–5 days.
Lab results typically come back in 1–2 days.
In Montana, people under 18 can consent to confidential STD testing and treatment on their own.
Yes, most chlamydia infections cause no symptoms, so screening is the only reliable way to catch it.
Yes, test after the window period, and if HIV exposure is a concern, ask about PEP within 72 hours.
Roughly 3–6 weeks after exposure for a dependable syphilis blood test.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.