Serum from a plain red top is the only acceptable sample type.
Gel barrier tubes are not acceptable.
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
Minimum volume: 250 µL serum, frozen
Send frozen serum Priority Overnight via FedEx and in a well insulated container on dry ice.
Frozen at -70°C: 1 year
up to 4 weeks
Complement (Alternative Complement Pathway Activity);Hemolytic Assay (Alternative Complement Pathway Activity)
Primary Immunodeficiency Screen: Pneumococcal polysaccharide IgG antibody [12 serotypes] (PNU12), Diphtheria IgG antibody titer (DIPHT), Tetanus IgG antibody titer (TET), Lymphocyte enumeration, CDC panel [CD3/CD4, CD3/CD8, CD19, CD16/56] (TBCDC), CBC with automated diff (HCBC), Immunoglobulin A level (IGA), Immunoglobulin G level (IGG), Immunoglobulin M level (IGM), Total complement activity (CH50)Complement Assessment: Total complement activity (CH50), Mannose binding lectin [MBL] level (MLEC)