Follow-up test for complement activity screening when CH50 and AH50 are low or absent and high suspicion remains for complement deficiency.
Quantitative Radial Immunodiffusion
Plain red. Also acceptable: Lavender (EDTA) or white (PPT).
Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.1 mL)
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.
Ambient. Also acceptable: Refrigerated; Frozen.
Grossly hemolyzed or severely lipemic specimens.
Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 2 weeks
Performed by non-ARUP Laboratory
|Component Test Code*||Component Chart Name||LOINC|
|0099076||Complement Component 9||4510-4|
Quest Diagnostics San Juan Capistrano Inc.