One 7.5 mL serum separator tube (SST). Also acceptable: One 5 mL red top tube.
Handling:
Allow to clot, centrifuge and immediately separate serum into a plastic vial. Refrigerate. Freeze ≤ -20°C if specimen cannot be tested within 7 days. Allow no more than three freeze/thaw cycles.
Stability:
7 days refrigerated at 2-8° C. Freeze ≤ -20° C for longer storage. Unstable ambient.
Standard Volume:
1 mL serum
Minimum Volume:
0.5 mL serum
Transport:
Refrigerated, or frozen, on dry ice.
Rejection Criteria:
Plasma; grossly lipemic, hemolytic, or contaminated specimen; refrigerated specimen received in laboratory more than 7 days after collection; specimen frozen and thawed more than three times.
Reference Range:
<1.0 AI (Antibody Index: Relative Fluorescent Intensity)