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
Refrigerated: 14 days
Frozen: 14 days
Methodology
Quantitative Liquid Chromatography - Tandem Mass Spectrometry
Reference Range
Therapeutic range: 30 - 300 ng/mL
Toxic Level: ≥ 600 ng/mL
Toxic Level: ≥ 600 ng/mL
Performing Laboratory
ARUP
New York DOH Approval Status
Yes