Test ID: Z0785
CPT code: 86306
LOINC: 27821-8
Specimen Type: Citrate
Frequency: Setup: Mon-Fri; analytic time 1 day
Instructions: 1 ml platelet poor plasma (Citrate) in 2 in plastic vials. Frozen.
Abnormal Protein S Free will reflex order a total Protein S.
Text: Useful For: Investigation of patients with a history of thrombosis.
Methodology: Latex Immunoassay (LIA)