APOLIPOPROTEIN B

General Information

HLAB/HOL Code: APOB
UPHSM LIS Test #: 395
Schedule:
Testing Time: 1 - 2 Days
Testing Lab: Labcorp

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 2.0 mL
Temperature: Room Temperature
Tube Type: Serum (preferred) OR plasma
Collection Info:
Container:   Red-top tube, gel-barrier tube, green-top (heparin) tube, or lavender-top (EDTA) tube.

Collection:  Separate serum or plasma from cells. Transfer specimen to a plastic transport tube.


Causes for Rejection: Specimen from nonfasting patient.

Specimen Acceptability

Patient MUST be fasting 12 to 14 hours.

Methods

Immunologic

Clinical Utilities

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.

CPT Codes

82172

* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Component Info

Name: APOLIPOPROTEIN B
Method: IMMUNOASSAY
CPT Code: 82172
Ref Range: 51-132
Comp Units: mg/dL