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 (K2 EDTA) or Plasma Preparation Tube (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: 3 weeks; Refrigerated: 3 weeks; Frozen: 3 weeks
Performed by non-ARUP Laboratory
|Component Test Code*||Component Chart Name||LOINC|
|0099073||Complement Component 7||4508-8|
Quest Diagnostics San Juan Capistrano Inc.