Centrifuge within 15 minutes in a refrigerated centrifuge, if available. To transport, separate plasma into a plastic vial and keep on ice. Specimen MUST BE TESTED WITHIN 30 MINUTES or frozen immediately.
30 minutes on ice, or 6 months frozen. Specimen unstable ambient or if thawed and refrozen.
2 mL plasma.
0.5 mL plasma.
Frozen. Send plasma to Laboratory on ice only if it can be tested within 30 minutes of collection.
Minimize exposure to air. Serum cannot be used because ammonia is produced in the clotting process.
Serum; hemolysis; specimen not removed from cells within 15 minutes; specimen on ice longer than 30 minutes; specimen received ambient.