Serum from a red top tube. Mix sample thoroughly.
For Serum specimens (INHLS): Allow blood to clot at room temp for 20 to 60 minutes. Centrifuge to thoroughly remove cells and immediately transfer cell-free serum to a fresh tube and freeze the cell-free serum on dry ice or at -70°C.
Preferred volume: 1 mL serum, frozen
Minimum volume: 250 µL, frozen
Storage Transport Temp
Send frozen serum Priority Overnight via FedEx and in a well insulated container on dry ice.
Frozen at -70°C: 1 year