Test directory: Amitriptyline & Nortriptyline

Ordering Code 702
Test Name Amitriptyline & Nortriptyline
Alias Elavil
Endep
Tryptanol
Preferred Specimen Serum
Preferred Container Plain (Red)
No gel barrier tubes.
Other Specimen/Container Plasma in EDTA, K2 (Lavender),
Plasma in Lithium Heparin (Green),
Plasma in Sodium Heparin (Green)
Optimum Volume 3 mL
Collection Instructions Draw full tube
Do Not use SST
Do Not use PST
Specimen should be collected >12 hours after dose.
Handling Instructions Separate serum from cells as soon as possible after clotting.
Transport Requirements Oahu: Refrigerated
Airline: Refrigerated
Specimen Stability Ambient: 5 Days
Refrigerated: 7 Days
Frozen: 30 Days
Rejection Criteria Gel barrier tube, Grossly hemolyzed, Serum separator tube
Avail. Stat NO
Analytic Time 10 Days
Methodology Chromatography/Mass Spectrometry
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of June 29, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Amitriptyline ALL See report.
Nortriptyline ALL See report.
Total ALL See report.