STD Testing in Johnston, IA
8 places to get tested — 2 partner labs that need no appointment, and 6 clinics and testing sites near Johnston.
- 2partner labs
- 4sliding scale
- 2insurance or fee
Order a test online
Pick a panel, visit a lab nearby, results in 1–2 days. No appointment, no insurance.
GET TESTED NOWCompare pricing →4,500+ labs nationwide · from $24Partner labs near Johnston
Order online first, then walk in. A urine or blood sample takes about 15 minutes and results come back in 1–2 days.
Quest Diagnostics
4.5 mi awayNo appointment$10 off orders over $100 applied at checkoutOrder a test for this lab →Labcorp
4.5 mi awayNo appointment$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 Johnston.
Explore testing locations near Johnston
Clinics and testing sites near Johnston
No free or low-cost clinic is addressed in Johnston itself, so the nearest are listed below, closest first. 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 2 partner labs in Johnston need no appointment and return results in 1–2 days.
- Clinic6.5 mi away
MercyOne
MercyOne Comfort Health Center for Women
1601 NW 114th St, Clive, IA, 50325
HoursMon-Thu 8:00am-5:00pm+1
Fri 8:00am-4:30pmAppointmentsAppointment requiredFeesInsurance accepted- HIV & STI testing
- PrEP & PEP
- Treats STIs
CallWebsiteDirectionsView services
Tests Chlamydia · Gonorrhea · Syphilis · HIV · Herpes · Hepatitis B · Hepatitis C · TB
Treatments STI treatment · PrEP · PEP · HIV care · Hep C treatment · Family planning · HPV vaccine · Hep B vaccine · PrEP navigation
Languages English
CDC GetTested listing, last updated by the source April 17, 2026. Directory retrieved September 4, 2026.
- Community organization24.2 mi away
McFarland Clinic
Family Medicine East Office
1018 Duff Ave, Ames, IA, 50010
HoursMon-Fri 8:00am-5:00pm
AppointmentsAppointment requiredFeesInsurance accepted- HIV & STI testing
- PrEP
- Treats STIs
- Medicaid accepted
CallWebsiteDirectionsView services
Tests Chlamydia · Gonorrhea · Syphilis · HIV · Herpes · Hepatitis B · Hepatitis C · TB
Treatments STI treatment · PrEP · Family planning · HPV vaccine · Hep B vaccine · PrEP navigation · Case management
Languages English
CDC GetTested listing, last updated by the source October 31, 2025. Directory retrieved September 4, 2026.
Buy an at-home STD test near Johnston
Walgreens, CVS Pharmacy, Target and Walmart sell over-the-counter test kits near Johnston. 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.
Walgreens
Nearest branch · 1.9 mi4 storesCVS Pharmacy
Nearest branch · 3.8 mi2 storesTarget
Nearest branch · 3.8 mi2 storesWalmart
Nearest branch · 2.5 mi1 store
Polk County STD rates
Reported cases per 100,000 residents. Change shown against the year before.
Chlamydia
▲ 4.5%615.1per 100k
3,108 reported cases · 2023
Gonorrhea
▼ 12.9%213.2per 100k
1,077 reported cases · 2023
Syphilis
▲ 5.7%18.4per 100k
93 reported cases · 2023
HIV
▼ 0%35new diagnoses
2023 · rate not published
Source: CDC NCHHSTP AtlasPlus, 2023 release · Polk County, IA
There were 35 new HIV diagnoses in Polk County in 2023. 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.
Polk County reported 3,108 chlamydia cases in 2023, a rate of 615.1 per 100,000 residents. That is above the national average, which is why routine testing matters here more than it does in most of the country — and most people who have chlamydia or gonorrhea have no symptoms at all, so waiting for something to feel wrong is not a strategy.
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 Johnston by video visit, prescribed by clinicians licensed in Iowa.
- 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 Johnston, answered
Where can I find free or sliding-scale STD testing near Johnston?
Among the 6 clinics listed near Johnston, 4 list sliding-scale fees. Confirm eligibility and charges before visiting.
How much does STD testing cost near Johnston?
Among the 6 clinics listed near Johnston, 4 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 near Johnston?
1 of the 6 listed clinics publish Saturday hours: Planned Parenthood North Central States. The partner labs are weekday only, so a Saturday visit means one of the community clinics.
How common are STDs in Johnston?
In 2023, Polk County reported 3,108 chlamydia cases — a rate of 615.1 per 100,000 residents. Gonorrhea was 213.2 per 100,000. There were also 35 new HIV diagnoses in 2023.
Is testing available in Spanish near Johnston?
2 of the 6 listed clinics indicate that Spanish-language services are available, and 3 list PrEP.
- 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 2023
Testing near other Iowa cities
Get tested in Johnston
Results in 1–2 days · no appointment · nothing filed through insurance
