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Test Code Complement Component 2 C2

Important Note

Follow up test for complement activity screening when CH50 is low or absent and AH50 is normal and high suspicion remains for complement deficiency.

 

CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Non-frozen specimens are unacceptable. Specimens exposed to repeated freeze thaw cycles unacceptable. Specimens let to clot at refrigerated temperature are unacceptable.

 

 

Specimen Volume

1 mL serum (minimum0.3 mL)

Preferred Specimen

Serum

 

 

 

Department

Sendouts

Methodology

Quantitative Radial Immunodiffusion

Reference Range

1.0 - 4.0 mg/dL

Schedule

Test performed Monday and Thursday.

Reported 5-10 days.

Specimen Preparation

Allow specimen to clot for one hour at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube and freeze immediately. (Minimum 0.3 mL)

 

CRITICAL FROZEN! Separate specimens must be submitted when multiple tests are ordered.

 

Non-frozen specimens are unacceptable. Specimens exposed to repeated freeze thaw cycles unacceptable. Specimens let to clot at refrigerated temperature are unacceptable.

Stability

After separation from cells: Ambient: 2 hours; Refrigerated: Unacceptable; Frozen: 2 weeks