Cardio IQ® Apolipoprotein B


Apolipoprotein 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.

Cardio IQ® Apolipoprotein B


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  • 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