Apolipoprotein B

Alphabetical Test listing

Apolipoprotein B-13422

  
Apolipoprotein B
  
13422
  
LAB13422
  
APOB
  
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

  
Serum
  
  
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
  

Immunologic

  

Desirable:                  < 90 mg/dL

Borderline High:     90 - 99 mg/dL

High:                 100 - 300 mg/dL

Very High:               > 300 mg/dL

  
82172
  
Yes
  
  
Result 1884-6
  
03/27/2019
  
11/07/2019
  
02/16/2021