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Login or RegisterApolipoprotein B (APO B) has been reported to be a powerful indicator of CAD. In some patients with CAD, APO B is elevated even in the presence of normal LDL cholesterol. Apo B is a protein that is involved in the metabolism of lipids and is the main protein constituent of lipoproteins such as very low-density lipoprotein (VLDL) and low-density lipoprotein (LDL, the “bad cholesterol”). Concentrations of apo B tend to mirror those of LDL-C. There are two major forms of Apolipoprotein B, B-100 and B-48. B-100, synthesized in the liver, is the major protein in VLDL, IDL, and LDL cholesterol. B-48, synthesized in the intestines, is essential for the assembly and secretion of chylomicrons. Patients with increased concentrations of Apolipoprotein B are at increased risk of atherosclerosis.
Fasting Required: Yes 10-12 Hours
Preferred Specimen: Serum
Reference Range(s):
| Reference Range | Male | Female |
| 52-109 mg/dL | 49-103 mg/dL | |
| Risk Category | Male | Female |
| Optimal | <80 mg/dL | <80 mg/dL |
| Moderate | 80-119 mg/dL | 80-119 mg/dL |
| High | ?120 mg/dL | ?120 mg/dL |
Turnaround Time: 5 Days
Test Code: 91726
