NORTRIPTYLINE

Test Documentation
Specimen Required
Draw blood in a plain red-top tube. Centrifuge and separate serum from cells within 2 hours. Send 1.0 mL serum (0.5 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: EDTA, fluoride, oxalate

Rejection Criteria
SST

Methodology
High Performance Liquid Chromatography

Stability
Room Temperature: Unacceptable; Refrigerated: 14 days; Frozen: 14 days

Reference Range
Therapeutic: 50–140 ng/mL
Toxic: >500 ng/mL

Performed
Monday-Friday

Turnaround Time1-3 days
Test CodeNORTI
CPT-4 Code (s)
80335 (G0480)
LOINC Codes
3872-9

Warde
Medical
Laboratory