Collect in a plain red top or SST tube.
Allow sample to clot at room temperature for 20 to 60 minutes. Centrifuge ASAP to separate serum from cells and aliquot cell-free serum into a labeled polypropylene or similar plastic tube.
Preferred volume: 1.1 mL serum
Minimum volume: 0.6 mL
Samples maintained at room temperature >24 hours, samples maintained refrigerated >7 days.
Send serum Priority Overnight via FedEx and in a well insulated container at ambient temperature, with an ice pack or frozen on dry ice.
2 days ambient (18-23°C), 1 week refrigerated (2-8°C), 1 year frozen (-20C). One freeze-thaw cycle will not negatively affect testing.
86331, 86003 x 15