Test Details

Mnemonic

CHLPR

Ordering Code

3500800

CPT-4 Code(s)

80342 (G0480)

Specimen Information

Collect

Red top

Specimen Preparation

Draw blood in a red top tube. Centrifuge, remove serum from cells and send 2.0 mL serum frozen in a screw capped plastic vial.

Alternate Specimen

Plasma: EDTA, sodium heparin, potassium oxalate or sodium fluoride

Minimum Volume

0.5 mL

Transport Temperature

Frozen

Stability

Room temperature: Unacceptable
Refrigerated: 14 days
Frozen: 14 days

Methodology

Quantitative Liquid Chromatography - Tandem Mass Spectrometry
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Reference Range

Therapeutic range: 30 - 300 ng/mL
Toxic Level: ≥ 600 ng/mL
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Performing Laboratory

ARUP Reference Laboratory
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New York DOH Approval Status

Yes
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