Experts say the standard recommended length of time to monitor drug use is 12 months. However, this is subject to change on a case-by-case basis. The minimum recommended time would be 90 days (3 months) to uncover problematic use patterns or support post-treatment accountability. Physician health programs with the best outcomes for substance use treatment (89% success rate) require their participants to monitor and test for up to five years. If you’re unsure how long to test for, speak to a trusted substance use advisor or contact us for guidance.