Follow-up test for complement activity screening when both CH50 and AH 50 are low or absent.
- Patient Preparation
- Lavender (EDTA).
- Specimen Preparation
- Separate from cells within 30 minutes of collection. Transfer 1 mL plasma to an ARUP Standard Transport Tube and freeze immediately. (Min: 0.25 mL)
- Storage/Transport Temperature
- CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
- Unacceptable Conditions
- Thawed specimens.
- Ambient: Unacceptable; Refrigerated: Unacceptable: Frozen: 1 year
|Component Test Code*||Component Chart Name||LOINC|
|2009383||Complement Factor I|
Performed at National Jewish