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 (K2EDTA) 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.
Room temperature. Also acceptable: Refrigerated or frozen.
Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 3 weeks
Performed by non-ARUP Laboratory
|Component Test Code*||Component Chart Name||LOINC|
|0099074||C8 Complement Component||4509-6|
Quest Diagnostics San Juan Capistrano Inc.