STD Testing in Modesto, CA
You can order an STD test online and give your sample at one of 6 test centers in Modesto (4 Quest Diagnostics and 2 Labcorp) used by STDcheck and HealthLabs. Single tests start at $39 with STDcheck's coupon, and the Full STD Panel is $139 ($129 with code 10OffOrder). There's no doctor's visit or insurance involved, and STDcheck says results come back in 1–2 days. 1 of the Modesto centers open on Saturday, and 7 more are within 15 miles.
Order an STD test for Modesto
The price is the same at every Modesto test center. Order online, choose your center from the provider's list, give your sample, and see results online.
We may earn a commission when you order through our links. Your price is the same. Details
| Test | Provider | Price | Order |
|---|---|---|---|
| Chlamydia & Gonorrhea Combined Test | STDcheck | $99 $89 with code | Order |
| Chlamydia Test | STDcheck | $59 $49 with code | Order |
| HIV 1 & 2 Antibody Test | STDcheck | $49 $39 with code | Order |
| Syphilis Test | STDcheck | $49 $39 with code | Order |
| Herpes 1 & 2 Test | STDcheck | $79 $69 with code | Order |
| Full STD Panel Panel | STDcheck | $139 $129 with code | Order |
| Extended STD Panel Panel | STDcheck | $259 | Order |
See all 32 STD tests and panels →
Test centers in Modesto
The 6 centers STDcheck and HealthLabs list in Modesto, across ZIP codes 95350, 95354, 95355, 95356. Hours are as listed by the providers on October 27, 2026; check before you go.
Source: STDcheck and HealthLabs test-center finder, checked October 27, 2026. SafeHealthCheck isn't affiliated with these labs; you don't book or pay at the center.
More test centers within 15 miles
- Quest Diagnostics, 2531 E Whitmore Ave, Ste P, Ceres, CA 95307 · 5.5 mi from central Modesto · Directions
- Quest Diagnostics, 250 S Oak Ave, Bldg C Ste 2, Oakdale, CA 95361 · 10.0 mi from central Modesto · Directions
- Quest Diagnostics, 981 E Tuolumne Rd, Suite 100, Turlock, CA 95382 · 13.7 mi from central Modesto · Directions
- Quest Diagnostics, 293 East Commerce Ave, Manteca, CA 95336 · 13.9 mi from central Modesto · Directions
- Quest Diagnostics, 1140 Norman Dr, Ste 2, Manteca, CA 95336 · 14.0 mi from central Modesto · Directions
- Quest Diagnostics, 777 E Hawkeye Ave, Ste 1, Turlock, CA 95380 · 14.0 mi from central Modesto · Directions
- Labcorp, 1801 Colorado Ave. Suite 310, Turlock, CA 95382 · 14.1 mi from central Modesto · Directions
You choose your exact center after ordering.
Free and low-cost testing in Modesto
If cost is the main concern, public-health clinics in California may offer free or lower-cost testing, usually with set hours or appointments. Ordering online is the faster option when you want to choose the time and place yourself.
- CDC GetTested locator: Search by ZIP code for free and low-cost STD and HIV testing sites near you.
Questions about STD testing in Modesto
How much does STD testing cost in Modesto?
Ordered online, single STD tests start at $39 with STDcheck's $10 coupon, and the Full STD Panel costs $139 ($129 with the code). The price is the same at all 6 Modesto test centers. Public-health clinics in California may offer free or lower-cost testing.
Is there a Quest Diagnostics test center in Modesto?
Yes, 4: 1524 Mchenry Ave, Ste 120 (ZIP 95350); 1008 6th St, Suite C (ZIP 95354); 2222 E Orangeburg Ave, Suite 104 (ZIP 95355); 3525 Pelandale Ave (ZIP 95356).
Is there a Labcorp test center in Modesto?
Yes, 2: 1541 Florida Ave, Ste 102 (ZIP 95350); 1101 Mchenry Ave (ZIP 95350).
Which Modesto test center opens earliest?
The Quest Diagnostics at 1524 Mchenry Ave, Ste 120 opens at 6:00 AM (Mon-Fri 6:00 AM-4:00 PM, Sat 6:30 AM-12:00 PM). The latest closing time listed is 4:00 PM, at the Labcorp on 1101 Mchenry Ave.
Are any Modesto test centers open on Saturday?
Yes: Quest Diagnostics, 1524 Mchenry Ave, Ste 120. Hours can change, so check before you go.
STD testing near Modesto
All STD testing locations in California → · All states →
SafeHealthCheck is a comparison site, not a clinic or lab. Prices come from each provider's website and can change; the provider's checkout shows the final price. SafeHealthCheck does not provide medical advice.