Test Overview
Test Methodology
Immunoturbidimetric
Test Usage
Evaluate abnormalities in lipoprotein fractions. Assess risk for developing coronary heart disease (CHD).
Reference Range *
Less than 105 mg/dl (1.05 g/l)
Test Details
Days Set Up
Monday, Thursday
Analytic Time
2 hours
Soft Order Code
APOB
MiChart Code
Apolipoprotein B
Synonyms
- Apo B
- APOLIPOPROTEIN B
- APOB
Laboratory
Chemical Pathology
Section
Automation
Specimen Requirements
Collection Instructions
Collect specimen in SST tube after an overnight (12 hours) fast . Centrifuge, aliquot serum into a plastic vial and refrigerate.
Special Handling
Fasting specimen.
Alternate Specimen
Red top, Green top tube (heparin) or Lavender (EDTA).
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum
Additional Information
Apolipoprotein B is the major protein component of low density lipoprotein (LDL). A significant correlation exists between Apo B and total cholesterol levels, so ApoB can be viewed as a positive risk factor for the development of CHD. Measurement of Apo B and the ratio Apo B/Apo A-1, may provide better predictive power for the assessment of risk for CHD than traditional blood lipid determinations.
Billing
CPT Code
82172
Fee Code
20750
LOINC
1884-6