SPECIMEN 1: Serum from a plain red top is the only acceptable sample type. Gel barrier tubes are not acceptable.
For serum sample: Allow blood to clot at room temp or 37°C for 20 to 60 minutes. Centrifuge to thoroughly remove cells and transfer cell-free serum to a fresh tube. As soon as possible freeze the cell-free serum on dry ice or at -70°C.
For Fluid Sample: Centrifuge to thoroughly remove cells and transfer cell-free fluid to a fresh tube. As soon as possible freeze the cell-free fluid on dry ice or at -70°C.
Preferred volume: 1 mL EACH serum and fluid, frozen
Minimum volume: 500 µL plasma and fluid, frozen
Fluid or serum contaminated with cells, clotted or with high hemoglobin in fluid, Thawed specimen(s).
Send frozen serum and fluid Priority Overnight via FedEx and in a well insulated container on dry ice.
Frozen at -70°C: 1 year
**Please note that there are 2 specimen types for this test!**
CH50;Total Classical Pathway;Fluid CH50;FLCH50