Diphenhydramine, Serum/Plasma
Marker1 mL serum collected in a red-top tube(no gel)
Drug & Alcohol Testing
1 provider available
Starting at
$129
Walk-In Lab
Lowest PriceOnlineDiphenhydramine (Benadryl) Blood Test
The Diphenhydramine (Benadryl) Blood test measures the diphenhydramine levels in the blood to screen for potential overdose.
Updated 7/22/2025
$129
Order Test