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Test Compendium

Test Name


Test Code

  • 6838

Test Synonym

  • Complement, Total (CH50)

Minimum Volume

  • 0.5 mL

Specimen Type

  • Serum

Primary Container

  • Serum Separator Tube, Plain Red Top Tube, Transfer Tube- Serum, Transfer Tube- Frozen- Serum

Transport Temp

  • Frozen


  • 5 days

Specimen Requirements

  • 1 mL Serum ship Frozen

Specimen Retention

  • Allow specimen to clot at room temperature for 15 to 30 minutes. Remove serum after centrifugation, and place in plastic transport tube. Keep specimen refrigerated for no more than three days prior to transporting frozen to the laboratory for testing. To avoid delays in turnaround time when requesting multiple tests on frozen samples, PLEASE SUBMIT SEPARATE FROZEN SPECIMENS FOR EACH TEST REQUESTED.