STD Testing in Union, MO

6 places to get tested — 1 partner lab that needs no appointment, and 5 clinics and testing sites in and near Union.

  • 1partner lab
  • 2sliding scale
  • 3insurance or fee

Order a test online

Pick a panel, visit a lab nearby, results in 1–2 days. No appointment, no insurance.

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Partner labs near Union

Order online, then walk in the same day with no appointment. A urine or blood sample takes about 15 minutes, and results come back in 1–2 days. They are confidential: never reported to your insurance company or added to your medical record.

  • Quest Diagnostics

    3.1 mi awayNo appointment

    1780 Old Hwy 50 E, Ste 103, Union, MO 63084 · Mon-Fri 7:30 am to 4:00 pm

    $10 off orders over $100 applied at checkoutOrder a test for this lab →

We earn a commission if you order through the links above. It does not change what you pay, and it does not decide which labs are listed — those are the closest partner labs to Union.

Explore testing locations in and near Union

Partner lab · 1Clinic · 5every partner lab in Union, plus the clinics listed on this page, within 25 miles

Clinics and testing sites in and near Union

5 clinics are listed below, closest first — including 2 that list sliding-scale fees. Public clinics generally take longer to return results than a private lab, and several test on set days only, so it is worth calling ahead. If you would rather not wait or give your details at a public clinic, the 1 partner lab in Union needs no appointment and returns results in 1–2 days.

How we chose these 5 clinics

  • Every one is on the CDC’s GetTested locatorThe wider CDC directory we draw from has over 16,000 entries. Only the ones GetTested also lists can appear here, and all 5 clinics below do.
  • Listings that name fewer than three tests are left outEven on GetTested, 527 listings name fewer than three tests. We don’t show them anywhere.
  • Unverified pregnancy centers are never shownThe CDC lists some pregnancy centers whose STD testing we couldn’t verify. We don’t list them anywhere.
  • Cost is stated the way the CDC lists itFree, sliding scale or insurance accepted, as each clinic reports it to the CDC. We don’t estimate prices, and if the listing says nothing, the card says “Fees not listed.”

Directory retrieved September 4, 2026. Open “View services” on any card to see when that clinic last updated its listing. All sources

  • Public health department0.7 mi away

    Franklin County Department of Health

    414 E Main St, Union, MO, 63084

    Hours
    Mon-Fri 8:00am-4:30pm
    AppointmentsAppointment required
    FeesInsurance accepted
    • HIV & STI testing
    • Treats STIs
    • Medicaid accepted
    • Interpretation listed
    CallWebsiteDirections
    View services

    Tests Chlamydia · Gonorrhea · Syphilis · HIV · Herpes · Hepatitis C · TB

    Treatments STI treatment · HPV vaccine · Hep B vaccine · Free condoms · Case management

    Languages English · interpreter available

    CDC GetTested listing, last updated by the source March 24, 2026. Directory retrieved September 4, 2026.

  • Clinic1.2 mi away

    Mercy-GoHealth Urgent Care

    Union

    39 Silo Dr, Union, MO, 63084

    Hours
    Mon-Fri 8:00am-8:00pm+2Sat 9:00pm-5:00pm · Sun 9:00am-5:00pm
    AppointmentsWalk-ins accepted
    FeesInsurance accepted
    • STI testing
    • Medicaid accepted
    • Interpretation listed
    CallWebsiteDirections
    View services

    Tests Chlamydia · Gonorrhea · Herpes · Hepatitis B · Hepatitis C · Hepatitis A · TB

    Languages English · interpreter available

    CDC GetTested listing, last updated by the source September 3, 2025. Directory retrieved September 4, 2026.

  • Community health center2.3 mi away

    Compass Health Network

    Union

    1780 Old Hwy 50 E, Union, MO, 63084

    Hours
    Mon-Fri 7:30am-4:30pm
    AppointmentsAppointment required
    FeesSliding scale listed
    • HIV & STI testing
    • Treats STIs
    • Medicaid accepted
    CallWebsiteDirections
    View services

    Tests Chlamydia · Gonorrhea · Syphilis · HIV · Hepatitis C · TB

    Treatments STI treatment · Family planning · HPV vaccine · Hep B vaccine · Free condoms · Case management

    Languages English

    CDC GetTested listing, last updated by the source February 3, 2026. Directory retrieved September 4, 2026.

  • Clinic7.1 mi away

    Total Access Urgent Care

    Washington Urgent Care

    1717 Madison Ave, Washington, MO, 63090

    Hours
    Mon-Sun 8:00am-8:00pm
    AppointmentsWalk-ins accepted
    FeesInsurance accepted
    • HIV & STI testing
    • Treats STIs
    • Medicaid accepted
    CallWebsiteDirections
    View services

    Tests Chlamydia · Gonorrhea · Syphilis · HIV · Herpes · Hepatitis B

    Treatments STI treatment · Hep B vaccine

    Languages English

    CDC GetTested listing, last updated by the source April 7, 2026. Directory retrieved September 4, 2026.

  • Community organization24.9 mi away

    Mercy

    Mercy Clinic Primary Care Clayton Clarkson

    15945 Clayton Rd, Ballwin, MO, 63011

    Hours
    Mon-Fri 8:00am-4:30pm
    AppointmentsAppointment required
    FeesSliding scale listed
    • HIV & STI testing
    • Treats STIs
    • Medicaid accepted
    CallWebsiteDirections
    View services

    Tests Chlamydia · Gonorrhea · Syphilis · HIV · Herpes · Hepatitis B · Hepatitis C · Hepatitis A · TB

    Treatments STI treatment · Family planning · HPV vaccine · Hep B vaccine · Free condoms · PrEP navigation · Case management

    Languages English

    CDC GetTested listing, last updated by the source December 23, 2025. Directory retrieved September 4, 2026.

Testing privacy

Anonymous vs. confidential testing

Most clinics test confidentially. Some also offer anonymous testing, usually for HIV. Availability varies by testing site, so ask when you call.

Confidential

  • You give your name, and the result goes in your medical record.
  • Results are not available to the public.
  • Chlamydia, gonorrhea, syphilis and HIV are reportable in every state, so a positive result is reported to the health department. Those reports are kept confidential.

Anonymous

  • You don’t give your name.
  • You receive a number and use it, not your name, to get your result.
  • Not every site offers it. Ask before your visit.

Source: NIH HIVinfo, HIV Testing · CDC, STI Reporting and Confidentiality

Buy an at-home STD test near Union and online

Walgreens and Walmart sell over-the-counter test kits near Union, and myLAB Box ships one to your door. You collect the sample at home and mail it to a lab. Stock varies by branch — call ahead or check online before making the trip.

We earn a commission if you order a myLAB Box kit through the link above. It does not change what you pay, and it does not decide which pharmacies are listed — those are the chains with branches near Union.

Franklin County STD rates

Reported cases per 100,000 residents. Change shown against the year before.

Chlamydia

▲ 3.5%

219.9per 100k

234 reported cases · 2023 · 56% below the MO rate

Gonorrhea

▼ 34.6%

41.4per 100k

44 reported cases · 2023 · 79% below the MO rate

Syphilis

▲ 9.5%

20.7per 100k

22 reported cases · 2023 · 4% below the MO rate

HIV

0new diagnoses

2014 · rate not published

Source: CDC NCHHSTP AtlasPlus, 2023 release · Franklin County MO STD Statistics

There were 0 new HIV diagnoses in Franklin County in 2014. HIV is the one infection where how soon you test changes which test you need — an RNA test detects it far earlier than a standard antibody test.

Franklin County reported 234 chlamydia cases in 2023, a rate of 219.9 per 100,000 residents. Most people who have chlamydia or gonorrhea have no symptoms at all, so waiting for something to feel wrong is not a strategy.

HIV prevention & treatment

PrEP, DoxyPEP & Online Treatment

A test result is the start, not the end. If you are negative and want to stay that way, PrEP and DoxyPEP cut the risk of a future infection. If you are positive, most STIs can be treated without setting foot in a clinic. Both are available to people in Union by video visit, prescribed by clinicians licensed in Missouri.

  • Treatment & DoxyPEP

    Wisp

    STI treatment $39 · DoxyPEP from $22

    Treatment for an STI, and DoxyPEP, prescribed online. The prescription goes to your pharmacy the same day.

    Visit Wisp
  • HIV PrEP & DoxyPEP

    Q Care Plus

    $0 for most insured patients

    PrEP and DoxyPEP by video visit, with test kits posted to you and follow-up bloodwork tracked between refills.

    Visit Q Care Plus
  • HIV PrEP & DoxyPEP

    MISTR

    $0 with or without insurance

    HIV prevention handled entirely from home: PrEP and the lab work that goes with it, no appointment.

    Visit MISTR

Prices depend on your insurance and change frequently — check the provider’s own site before ordering. None of these replace emergency care.

STD testing in Union, answered

Where can I find free or sliding-scale STD testing in Union?

Among the 5 clinics listed in Union, 2 list sliding-scale fees. Confirm eligibility and charges before visiting.

How much does STD testing cost in Union?

Among the 5 clinics listed in Union, 2 charge on a sliding scale based on income. Private lab testing is a flat price paid up front — no insurance is filed, so nothing appears on an explanation of benefits.

Can I get tested on a weekend in Union?

2 of the 5 listed clinics publish Saturday hours: Mercy-GoHealth Urgent Care, Total Access Urgent Care. The partner labs are weekday only, so a Saturday visit means one of the community clinics.

How common are STDs in Union?

In 2023, Franklin County reported 234 chlamydia cases — a rate of 219.9 per 100,000 residents. Gonorrhea was 41.4 per 100,000. There were also 0 new HIV diagnoses in 2014.

Data and sources
Partner labs
Quest and Labcorp location directories · checked August 2026
Public clinics
CDC GetTested / NPIN directory · retrieved September 4, 2026
Retailers
Retailer store directories · updated September 2026
Statistics
CDC NCHHSTP AtlasPlus · reporting year 2023
HIV diagnoses
CDC HIV Surveillance · reporting year 2014