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Complement Activity Enzyme Immunoassay, Total

Mnemonic

CH50

Synonym

CH50 - Complement Activity Enzyme Total

Specimen Collection Requirements

Collect

Serum, one 7.0 mL plain red top tube

Handling

Allow specimen to clot for one hour at room temperature. Separate serum from cells ASAP and freeze. CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Preferred Volume

1.0 mL

Minimum Volume

0.5 mL (Whole Blood 1.2 mL minimum draw)

Transport

Frozen

Rejection Criteria

Specimens left to clot at 2-8°C, specimens exposed to repeated freeze/thaw cycles, gel separator tubes, nonfrozen specimens

Stability

AFTER SEPARATION FROM CELLS: Ambient: 2 hours; Refrigerated: Unacceptable; Frozen: 2 weeks

Testing Information

Performed

Mon - Fri

Reported

3-5 days

Method

Enzyme-Linked Immunosorbent Assay

Referral Lab

ARUP (50198)

Reference Values

Reference Values

Interpretation provided.

CPT Codes

86162

Last Updated: Sunday, December 20, 2020 03:59:19 PM


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