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Item Value
Approval req'd? No
Available Stat? No
Test code AMTR
Performed by Quest
Sendout? Yes
Method Liquid Chromatography
Tandem Mass Spectrometry
Collection Instructions Do NOT use serum separator tube.
Container type Red top
Amount to Collect 6 mL blood
Sample type Serum
Preferred volume 3mL serum
Min. Volume 1.5 mL serum
UCSF Rejection Criteria Collected in Gold top
Processing notes Separate serum promptly. Refrigerate.
Units µg/L (mcg/L)
Normal range 100-250 µg/L for sum of drug and metabolite
Critical value Quest Priority-1: Amitriptyline + Nortriptyline ≥ 1000 µg/L
Quest Priority-2: 600-999 µg/L
Synonyms Elavil; Aventyl
Turn around times Test performed Monday-Saturday. Turnaround time: 2-5 days
Additional information Includes testing for the metabolite nortriptyline (Aventyl)
CPT coding 80335-90
LOINC code 3333-2
Last Updated 6/21/2016 08:04:48
Entry Number 48
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