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Apolipoprotein Evaluation
Test Code7018
CPT Codes
82172 (x2)
Includes
Apolipoprotein A1
Apolipoprotein B
Apolipoprotein B/A1 Ratio
Apolipoprotein B
Apolipoprotein B/A1 Ratio
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 10 days
Frozen: 30 days
Refrigerated: 10 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Grossly lipemic
Methodology
Immunoassay (IA)
Setup Schedule
AM
Report Available
1 day
Clinical Significance
Apolipoprotein A1 is the primary protein associated with HDL cholesterol. Like HDL cholesterol, increased concentrations are associated with reduced risk of cardiovascular disease. Apolipoprotein B-100 is the primary protein associated with LDL cholesterol and other lipid particles. Like LDL cholesterol, increased concentrations are associated with increased risk of cardiovascular disease. The ratio of these two apolipoproteins correlates with risk of cardiovascular disease.