Apolipoprotein B

Alphabetical Test listing

Apolipoprotein B-13422

Apolipoprotein B
Apo B100
Beta apolipoprotein
β apolipoprotein

LDL and its major protein, apolipoprotein B, play an essential role in lipid transport and metabolism. Apo B may regulate cholesterol synthesis through its interaction with specific cell membrane receptors and by inhibition of HMG Co A reductase. This enzyme has been identified as the rate controlling enzyme in cholesterol biosynthesis. Apo B may be important in the genesis of atherosclerosis and its quantitation useful in the evaluation of patients at risk for or having coronary atherosclerosis (CAD). High levels indicate increased risk for CAD.


Patient should fast 12 - 14 hours prior to specimen collection

Fasting for a blood test

2.0 mL

Spin and separate

EDTA plasma
Heparin plasma

Gold serum separator (SST) tube

Lavender (EDTA), 4mL

Dk green heparin (Li or Na), no gel



Gold - Spin

Lavender/Dk green - Spin and separate


Gold serum separator (SST) tube

Transfer vial/tube with cap - 12mL (LabCorp)


Ambient (preferred) - 14 days

Refrigerated - 14 days

Frozen - 14 days

Freeze/thaw cycles - stable x 3

  • Specimen from nonfasting patient
LabCorp Burlington (167015): R-LC
Mo - Fr, Su
1 - 2 days



Desirable:                  < 90 mg/dL

Borderline High:     90 - 99 mg/dL

High:                 100 - 300 mg/dL

Very High:               > 300 mg/dL

Result 1884-6