Test ID: Complement C4a

Test Codes

  • Exsera Order Code: C4AQ
  • CPT Code: 86160

Specimen Requirements

Specimen Type: EDTA Plasma

Collection Tube: Lavender top, K2 or K3 EDTA

Collection Instructions:  Store samples on wet ice and centrifuge within 2 hours of draw. Then transfer to cryogenic tubes and aliquot as necessary before storing tubes in the appropriate freezer.

Volume Required: ~200 mcL  

Storage/Transport Temperature: Frozen @ -80C

Stability: 

Unacceptable Conditions: Samples stored at >-80C, previously thawed samples, or unlabeled samples. 

Ordering Recommendation

Reference Interval

Normal Human: 110 - 699 ng/mL

ULOQ/ALQ: N/A

LLOQ/BLQ: 51 ng/mL

Test ClassifICATION

This test has been cleared by the US Food and Drug Administration and is used per manufacturer's instructions and per Exsera's SOPs. Performance characteristics were verified by Exsera in a manner consistent with CAP/CLIA requirements.

Methodology

ELISA or EIA

Patient Testing Turnaround time

  • Standard: 14-20 Days
  • Expedited: 4-5 Days

Aliases

C4a, C4a Fragment, C4a complement level

Additional Notes

Diagnostic samples held for ~2 months before disposal of remaining sample