Apolipoprotein A-1 (SI)

Apo A-1, Apolipoprotein A, Apo A

24 hours

Immunoturbidimetry

Males: 1.04 - 2.02 g/L Females: 1.08 - 2.25 g/L

See overview.

Accredited NRL Laboratory

Daily

Apolipoprotein A (Apo A‑1) measurements are used as an aid in identifying patients at risk of developing atherosclerosis, and for the diagnosis of dyslipidemias. Apo A‑1 is the major protein constituent of high‑density lipoprotein (HDL) particles, which are produced in the intestine and the liver, and transport excess cellular cholesterol peripheral cells to the liver (reverse cholesterol transport), thereby reducing the risk of atherosclerosis.

Studies have shown that the Apo B / Apo A‑1 ratio (NRL order code 11251040) reflects the cholesterol balance between potentially atherogenic and anti-atherogenic lipoproteins, and predicts the risk of developing cardiovascular events, such as atherosclerosis, coronary heart disease and stroke.

Results are reported in SI Units: g/L

Serum or Plasma (Li-Hep)

0.5 mL

Serum Separator Tube (SST; Gold Top), Plain Tube (Red Top), Lithium Heparin Plasma (Green Top)

No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.

Samples should be sent to the laboratory as soon as possible after collection. If this is not possible, samples should be centrifuged and transported refrigerated (2 to 8°C).