Complement Activity Total (CH50)

Abbrev Code:CH50AT   
Order Code:LAB8222Order Name:Complement Activity Total (CH50)
Synonyms:Complement Activity Enzyme Immunoassay, Total; CH50T
CPT Codes: 86162 x1
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported in 1-2 days.

Collection Instructions

Optimal Volume:2 mL
Minimum\Peds Volume:1.2 mL
Container:Red (no gel)
Causes for Rejection:Serum separator tubes. Specimens left to clot at 2-8°C.  Room temperature or refrigerated specimens. Specimens repeatedly thawed and frozen. Grossly hemolyzed or severely lipemic specimens.

Processing and Shipping

Specimen Processing:Allow specimen to clot 60 minutes at room temperature. Centrifuge and aliquot 1 mL, 0.5 mL minimum and freeze within 2 hours. Store in freezer.
Shipping Instructions:Ship on dry ice. CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Stability:After separation from cells: 1 month frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:3002575


Reference Range:
Low 38.6 U/mL or less
Normal 38.7-89.9 U/mL
High 90.0 U/mL or greater

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