Test Details

Mnemonic

AMITR

Ordering Code

1750320

CPT-4 Code(s)

80335 (G0480)

Specimen Information

Collect

Red top
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Specimen Preparation

Centrifuge and separate from cells within 8 hours. Send 1.0 mL serum refrigerated in a screw capped plastic vial.
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Alternate Specimen

Plasma: Lavender EDTA, potassium oxalate, gray sodium fluoride
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Minimum Volume

0.5 mL
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Transport Temperature

Refrigerated
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Rejection Criteria

Serum separator tube (SST)
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Stability

Room Temperature: 48 hours
Refrigerated: 14 days
Frozen: 14 days
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Methodology

High Performance Liquid Chromatography
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Reference Range

Amitriptyline + Nortriptyline
Therapeutic: 90 – 250 ng/mL
Toxic: >500 ng/mL
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Performing Laboratory

Warde Medical Laboratory
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