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Blood Tests in San Francisco, CA

Quest Diagnostics in San Francisco

Quest Diagnostics

941 Clay St, San Francisco, CA 94108

M-F 8:00 am-12:30 pm 1:00 pm-3:00 pm;

Quest Diagnostics

450 Sutter Street, Ste 2540, San Francisco, CA 94108

M-F 8:00 am-12:00 pm 1:00 pm-4:00 pm;

Quest Diagnostics

1640 Valencia St, Ste 1b, San Francisco, CA 94110

M-F 7:00 am-11:30 am 12:30 pm-4:00 pm;

Quest Diagnostics

2198 15th St, San Francisco, CA 94114

M-F 8:00 am-4:00 pm; Drug Screen: M-F 12:00 pm-3:00 pm;

Quest Diagnostics

2201 Post St, San Francisco, CA 94115

M-F 8:00 am-12:00 pm 1:00 pm-4:30 pm;

How it works

Ordering a blood test with us is easy, private & backed by the power of science. Long story short:

1

Order your test

Save a trip to the doctor. Your results will come with clear, friendly explanations.

2

Book an appointment

Visit any of our 2,200+ nearby lab locations to have your samples collected.

3

Get results

Receive a clear, easy-to-digest health report by email & SMS within a few business days.

San Francisco Blood Testing FAQ

How many Quest Diagnostics locations are in San Francisco?
We work with 5 Quest Lab Locations in San Francisco, CA. Each one is listed above with address, hours, phone, and a direct booking link.
Do I need an appointment for a blood test in San Francisco?
No. Most Quest Diagnostics locations in San Francisco accept walk-ins during business hours. Scheduling an appointment online is recommended to reduce wait times.
What should I bring to the lab?
Bring a valid photo ID and the lab requisition we email you after your order. If your test requires fasting, avoid food and drinks other than water for 8–12 hours before your visit.
How long does a blood draw take?
The draw itself takes about 5 minutes. Most visits, including check-in, are done in 15 minutes or less.
Do I need a doctor's order for lab work in San Francisco?
No. A licensed physician reviews and approves all lab orders on your behalf — included with every test you order on DiscountedLabs.com. No separate doctor visit needed.
When will I get my results?
Most results are ready in 2–10 business days. Hormone panels using LC/MS may take slightly longer. You'll get a notification by email and SMS as soon as your results are available.
Are Quest Diagnostics labs in San Francisco open on weekends?
Hours vary by location. Many Quest labs in San Francisco offer Saturday hours. Check each location card above for specific hours.
Can I use my insurance for lab tests?
Our tests are self-pay and do not require insurance. HSA and FSA cards are accepted.
What types of tests can I order in San Francisco?
Hundreds of individual blood tests and bundled lab panels — including thyroid, hormones, metabolic, lipid, vitamin levels, cancer markers, and more. Browse our full catalog to find the test you need.
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