DIPHENHYDRAMINE, SERUM/PLASMA

Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate serum from cells and send 1.0 mL serum (0.4 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: Lavender EDTA

Rejection Criteria
SST, PST

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

Stability
Room temperature: 30 days; Refrigerated: 30 days; Frozen: 24 months

Reference Range
By report

Performed
Monday, Wednesday, Friday

Turnaround Time5-7 days
Test CodeDIPHN
CPT-4 Code (s)
80375
LOINC Codes
3570-9

Warde
Medical
Laboratory