Tag: drug positivity rates
Drug positivity rates continue at historically high levels
Marijuana positivity continues double-digit increases to keep overall drug positivity at historically high levels, according to the latest Quest Diagnostics Drug Testing Index.
Why choose Quest Diagnostics
Quest Diagnostics is the only SAMHSA-certified and CAP-FDT-accredited laboratory to offer in-house testing for all three of the most popular drug test types: urine, oral fluid, and hair.
