Find out if coffee impacts drug tests at https://drugtestingsupplies.co....m/blog/dot/can-you-d Standard tests don’t screen for caffeine, only drugs like cocaine, per DrugTestingSupplies.com (2025). Overdrinking coffee can dilute urine, risking a retest, per. Balanced hydration avoids dilution issues, per. Drug Testing Supplies provides CLIA-waived kits for workplace screening, per. Contact them for fast shipping or testing services, per. Follow facility protocols for optimal results, per. Their FDA-approved tests ensure compliance, per. Avoid dilution concerns with their guidance, per.

