One 7.5 mL serum separator tube (SST). Also acceptable: One 5 mL red top tube or 4 mL lavender top tube (EDTA).
Handling:
Allow to clot, centrifuge and separate serum or plasma from cells immediately. Refrigerate. Freeze if specimen cannot be assayed within 24 hours. Allow no more than one freeze/thaw cycle.
Stability:
8 hours ambient, 24 hours refrigerated, or 1 month frozen at -20o C.
Standard Volume:
0.5 mL serum or plasma.
Minimum Volume:
250 µL serum or plasma.
Transport:
Refrigerated; or if frozen, on dry ice.
Rejection Criteria:
Plasma other than EDTA; hemolysis; specimen frozen and thawed more than once.
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