Test Directory

Test Code
UQ380
Test Name
Diphenhydramine, Quantitative, Urine
CPT Codes
80375
Expected Turnaround Time
1 - 5 days
Clinical Utility

Useful in determining the use or abuse of Diphenhydramine.

Testing includes identification and quantitation of:

  • Diphenhydramine
Specimen and Container Info

Preferred Specimen Type: Urine 

Preferred Collection Container: Plastic Urine Container (Preservative Free) 

Desired Specimen Volume: 10 mL 

Transport Instructions

Transport to the laboratory refrigerated.

Stability Requirements

Room Temperature

 7 Days 

Refrigerated

  7 Days

Causes for Rejection

Urine specimens received in tubes containing preservatives will be rejected.

Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Limitations

Analyte

Cutoff Concentration (ng/mL)

Diphenhydramine

100

Performing Location
Roble Road Core Laboratory
Alternate Names

Benadryl Alternate Names:

  • Diphenhydramine
  • Benadryl
  • Unisom
  • Dramamine
  • Dimenhydrinate
Testing Schedule
Routine, daily