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Lipoprotein Fractionation, Ultracentrifugation : 36435
Test CodeLIPOQ or 36435
CPT Codes
82465, 83701, 84478
Instructions
Fasting for at least 12 hours is required.
Serum separator tube or plain red.
Serum separator tube or plain red.
Transport Container
Centrifuge serum separator tube and transport. If plain red, centrifuge and aliquot 4.0 mL serum into a standard transport tube. (Min: 2.0 mL)
Transport Temperature
Refrigerated.
Specimen Stability
Ambient: 24 hours; Refrigerated: 7 days; Frozen: -20 C 14 days, -70 C 1 year
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Over 24 hours room temperature.
Methodology
Ultracentrifugation, Colorimetric, Enzymatic
Setup Schedule
Tuesday & Friday
Report Available
2-4 days (From receipt at performing laboratory)
Limitations
The assay manufacturer Beckman Coulter advises: N-Acetyl Cysteine (NAC), when administered in therapeutic concentrations (for the treatment of acetaminophen overdose), has been determined to interfere with assays for cholesterol, HDL cholesterol, and uric acid where NAC interference may lead to falsely low results. According to Beckman Coulter, the NAC interference should be insignificant by 12 hours after completion of the initial loading dose of an IV infusion treatment regimen consisting of an initial loading dose of 150 mg/kg administered over 1 hr, a second dose of 50 mg/kg administered over 4 hrs and a third dose of 100 mg/kg administered over 16 hrs.
Reference Range
See Laboratory Report.
Performing Laboratory
Quest Diagnostics
