Test ID: Z0991
CPT code: 83883
LOINC: 1836-6
Specimen Type: Red, SST, OR green-top (heparin) tube
Frequency: 3 – 6 days
Instructions: 1 mL Serum or Plasma from Red, SST, OR green-top (heparin) tube, Ambient. Min 0.4 mL.
Text:Responsible for binding & transporting retinol (vitamin A).Serum concentrations reflect the synthesis capacity of the liver and may indicate early malnutrition, acute and chronic hepatic disease, advanced chronic renal insufficiency, and cystic fibrosis. Assess nephritic syndrome and protein-losing enteropathy.
Methodology: Immunologic