UTox and cross reactivity

Many non illicit drugs cross react with common drugs screened on the traditional urine drug screen.

  • NSAIDs can cause false positive cannabinoid screens
  • Sertraline can cause a benzo false positive
  • Most benzodiazepine screens look for oxazepam which is a metabolite of diazepam and chlordiazepoxide. Therefore, lorazepam, alprazolam, and clonazepam are commonly missed.

What is the detection interval for marijuana on a UDS?Read more