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New Account/Customer Services 800.255.2159, option 1

Toxicology Support Services
800.255.2159, option 5

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Urine Testing Services

We'll find out.

Redwood Toxicology Laboratory utilizes the most sophisticated, sensitive and specific equipment and technology available to screen, confirm and quantitate drugs of abuse in urine.

Standard Drugs of Abuse Urine Tests

Choose RTL for urine drug tests – RTL processes over 85,000 urine specimens each week for thousands of clients. A variety of drug panel options are available to your agency to meet your specific needs.

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Comprehensive Drug Test

Demand more from your drug test – Detect a wide range of prescription brand name drugs, illicit drugs, and alcohol in urine. Screened and confirmed using GC/MS and/or LC/MS/MS.

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EtG/EtS Alcohol Testing

Be confident with your alcohol testing – RTL now offers urine ethyl glucuronide (EtG) / ethyl sulfate (EtS) testing. This test allows for the detection of alcohol metabolites in urine for up to 80 hours after alcohol consumption.

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Synthetic Cannabinoids Urine Testing

Detect emerging "legal high" drugs – We can confidently say we're at the forefront of researching and identifying synthetic cannabinoids. We were the first lab in the world to develop a urine-based metabolite test for "synthetic marijuana."

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Designer Stimulant Drug Testing

Detect designer drugs sold as "bath salts" – Identifies key active ingredient of many "legal high" products deceptively labeled as "bath salts" or sold as "Legal X."

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Steroid/Sports Drug Testing

Comparable to WADA testing – Our steroid test is ideal for sports associations, schools, corrections and occupational health agencies.

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GHB Testing

"Date rape" drug testing – Turn to RTL for gamma-Hydroxybutyric acid (GHB) Testing. We'll find out.

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Fentanyl Testing

Specialty lab test for potent pain killer – Detects therapeutic and illicitly synthesized forms of fentanyl.

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Pregnancy (hCG) Testing

Lab based pregnancy tests – RTL offers qualitative lab-based human chorionic gonadotropin (hCG) urine pregnancy testing.

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Additional information is available in our Corporate Brochure. To download a PDF of our brochure, click here.

To learn more about Laboratory Services call:


Contact Us

Laboratory: 800-255-2159

Products: 877-444-0049