Why Choose Our Partner Clinics
How to Get Drug Test in Ontario
Order Online
Select your test and choose Ontario location
Visit Clinic
Go to the lab at your convenience - walk-ins welcome
Quick Test
10-15 minute appointment, no wait times
Get Results
Secure online results in 1-3 business days
Testing Locations in Ontario
Labcorp
1310 San Bernardino Rd STE 107, Upland, CA 91786, USA, Ontario, CA
(909) 981-8888
Labcorp
12555 Central Ave Ste A, Chino, CA 91710, USA, Ontario, CA
(909) 628-2720
Labcorp
10801 Foothill Blvd STE 104, Rancho Cucamonga, CA 91730, USA, Ontario, CA
(909) 481-1985
Labcorp
400 N Mountain Ave # 109, Upland, CA 91786, USA, Ontario, CA
(909) 741-3217
Labcorp at Walgreens
12574 Limonite Ave, Eastvale, CA 91752, USA, Ontario, CA
(951) 880-0562
Quest Diagnostics
573 N Mountain Ave, Upland, CA 91786, USA, Ontario, CA
(909) 981-5941
Frequently Asked Questions
How long do drugs stay in your system?
Detection windows vary: urine tests detect most drugs for 3-30 days, while hair tests can detect use for up to 90 days.
Is drug testing confidential?
Yes, all drug testing is confidential. Results are only shared with you and any authorized parties you designate.