LORAZEPAM

Test Documentation
Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate and send 1.0 mL serum (0.2 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: EDTA, oxalate, fluoride

Rejection Criteria
SST

Methodology
Liquid Chromatography/Tandem Mass Spectrometry

Stability
Room Temperature: 48 hours; Refrigerated: 14 days; Frozen: 14 days

Reference Range
Therapeutic: 50–240 ng/mL
Toxic: >300 ng/mL

Performed
Monday, Wednesday, Friday

Turnaround Time2-3 days
Test CodeLORAZ
CPT-4 Code (s)
80346 (G0480)
LOINC Codes
3724-2

Warde
Medical
Laboratory