Test ID: Z2533
CPT code: 85301
LOINC: 27812-7
Specimen Type: Blue (sodium citrate)
Frequency: 2 – 3 days
Instructions: 2 mL Plasma from Blue-top (sodium citrate), Frozen. Min 1.0 mL.
Text: Confirmation and characterization of congenital AT deficiency. AT testing should not be performed on patients on heparin therapy because heparin decreases plasma AT levels. AT results for individuals on warfarin therapy should be interpreted with caution, since warfarin can increase levels of AT of patients with heterozygous deficiency into the normal range.
Methodology: Automated (LIATEST) Enzyme Immunoassay (EIA)