Apolipoprotein A-1-13353

LabCorp is currently experiencing testing and reporting delays for this assay.

Test info

Apolipoprotein A-1
A-1 Apolipoprotein
Alpha Apolipoprotein
Apo A-1



Patient should fast 12 - 14 hours prior to specimen collection

Fasting for a blood test

2.0 mL
  1. Allow sample to clot
  2. Spin
  3. Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum, within two (2) hours of sample collection
EDTA plasma
Heparin plasma

Gold serum separator (SST) tube

Lavender (EDTA), 4mL

Dk green heparin (Li or Na), no gel




Immediatley following collection, mix sample by inverting 8 - 10 times



  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin within two (2) hours of sample collection

Lavender/Dk green:

  1. Spin
  2. Transfer plasma to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as the appropriate plasma type, within two (2) hours of sample collection

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 (016873): R-LC
Mo - Fr, Su
1 - 2 days


Clinical and Interpretive info


An interpretive report will be provided


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. 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).


Result 1869-7