One 7.5 mL serum separator tube (SST). Also acceptable: One 5 mL red top tube.
Allow to clot for 30 minutes to one hour at 20-25° C. Do not clot at 2-8° C. Centrifuge and separate serum from cells within one hour. Freeze immediately at -20° C. Do not allow to thaw.
Specimen stable 1 year at -20° C.
1 mL serum.
0.5 mL serum.
Frozen, on dry ice.
Complement is a group of proteins which destroy infectious agents. Measurement of these proteins aids in the diagnosis of immunologic disorders, especially those associated with deficiencies of complement components.
Specimen allowed to clot at 2-8° C; plasma; gross hemolysis; specimen frozen and thawed more than once.