General Information

UPHSM LIS Test #: 027260
Testing Time: 1-2 Days
Testing Lab: Labcorp

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 2 mL
Temperature: Ambient
Tube Type: Serum (preferred) or plasma
Collection Info:
Container: Red-top tube, gel-barrier tube, green-top (heparin) tube, or lavender-top (EDTA) tube
Patient Preparation: Patient must be fasting 12 to 14 hours.
Special Instructions: State patient's sex on the test request form.
Collection: Separate serum or plasma from cells. Transfer specimen to a plastic transport tube.
Storage Instructions: Maintain specimen at room temperature.

Specimen Acceptability

Causes for Rejection:
Specimen from non-fasting patient



Clinical Utilities

Apo A-1 comprises 60% to 70% of the protein content of HDL. Apo A-1 serves as an activator of LCAT which is involved in the transport of cholesterol from peripheral tissues to the liver where it is degraded. Decreased serum HDL cholesterol levels have been reported to correlate with increased risk of coronary artery disease (CAD); however, Apo A-1 has been suggested as a better discrimination of CAD than HDL.1 Apo A-1 levels also correlate with survival rates or risk factors for patients with myocardial infarction and peripheral vascular disease. Measurement of Apo A-1 may also aid in the diagnosis of Tangier disease (absence of alpha-lipoprotein).

CPT Codes


* 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.

Reference Range

Female (mg/dL)
  0 to 14 d: 71−97
  15 d to 11 m: 53−175
  1 to 5 y: 80−164
  6 to 80 y: 116−209
  >80 y: 114−214

Male (mg/dL)
  0 to 14 d: 62−91
  15 d to 11m : 53−175
  1 to 5 y: 80−164
  6 to 12 y: 107−175
  >12 y: 101−178