|Method(s)||Particle Enhanced Turbidimetric Inhibition Immunoassay|
One 3 mL plain red top tube. Also acceptable: heparinized plasma.
1 mL serum at 2-8ºC.
DO NOT collect in a serum separator tube; limited stability due to absorption of drug by gel, with decrease in result by as much as 15%.
Ambient: 2 days; Refrigerated: 7 days; Frozen: 3 months
Lab Staff: Specimens collected in gel tubes and received within 1 hour of collection may be run and reported with comment PTNC.
|Preferred Specimen Collection Device(s)|