Volume: 0.5 mL blood. Tube must be full, tightly capped, and PLACED ON ICE IMMEDIATELY. Container: Green top (heparinized) vacutainer or microtainer (see above instructions). Temperature: Place specimen immediately on ice and transport to lab within 15 minutes after collection. Rejection: Specimen not on ice, in transport longer than 15 minutes, hemolysis, traumatic stick. Normal: 10-40 ÃÂµmol/Ã¢Âµmol. L: Uses liver function, test supports clinical diagnosis of hepatic, encephalopathy hepatic, Cirrhosis'reye S, syndrome or aminoacidurias of. infancy