Innovation Through Pioneering Technology SM

Call us today 800-522-5052

For billing information:

Test Compendium


Test Code

  • 6838

Test Synonym

  • Complement, Total (CH50)

Minimum Volume

  • 0.5 mL

Specimen Requirements

  • Serum


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


  • Frozen

Turn Around Time

  • 5 days

CPT Codes

  • 86162
    *The CPT codes provided are based on AMA guidelines and are provided for informational purposes only. CPT coding is the responsibility of the billing entity. Please direct any questions regarding the CPT coding to the payer being billed.

Special Instructions

  • 1 mL Serum ship Frozen

Additional Information

  • 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.

Specimen Stability

  • AMBIENT: 1 day REFRIGERATED: 3 days FROZEN: 14 days (0 to -70(degrees)C)