One 7.5 mL serum separator tube (SST) or one 5 mL red top tube.
Handling:
Allow to clot and separate serum immediately into a plastic vial. Refrigerate. Freeze ≤ -20° C if specimen cannot be tested within 7 days. Allow no more than 3 freeze/thaw cycles.
Stability:
8 hours ambient, 7 days refrigerated, or indefinitely frozen.
Standard Volume:
1 mL serum
Minimum Volume:
0.5 mL serum
Transport:
Refrigerated, or frozen on dry ice.
Rejection Criteria:
Plasma, gross lipemia, hemolysis, or contamination; refrigerated specimen received in laboratory more than 7 days, or ambient more than 8 hours, after collection; specimen frozen/thawed more than 3 times.
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