One 7.5 mL serum separator tube (SST). Also acceptable: Red top tube, lavender top tube (EDTA), green top tube (heparin), or plasma separator tube (PST).
Handling:
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.
Standard Volume:
0.5 mL serum or plasma.
Minimum Volume:
200 uL serum or plasma.
Transport:
Refrigerated if received in laboratory within 24 hours of collection, or frozen on dry ice.
Rejection Criteria:
Specimen that has been frozen and thawed more than once; refrigerated specimen received in laboratory more than 24 hours after collection.