Blood Drug Testing

Is it possible to pass a blood drug test and fail a urine drug test?

Someone was arrested for DUI. Bood and urine were taken to test for drugs. When the results came back, the urine had tested positive for meth. The blood showed negative, certain basic drugs. Are the urine and the blood usually tested for the same drugs? These tests were done by a State Division of Forensic Sciences. It says it was a Toxicology report and the Drug Screen Results were by Immunoassay. They go to court in 2 days and want to know what they're up against. They also had a drug test done on their hair (their choice) and it came back negative. This was done 6 months after the urine & blood tests were done.

Public Comments

1. Yep thats why they do both.