C4a Level

Overview

  • EPIC Code:
  • MISC
  • Soft Test Code:
  • MSOT
  • Send Out Test Code:
  • C4AR
Alternate Names
  • C4a anaphylatoxin
  • C4a complement, RIA
  • C4a des Arg Level
  • C4ades Arg Level
  • C4AL
  • Complement Component 4A
  • Radial Immuno Assay (C4a Level)

Specimen Collection & Preparation

Client Notes

If your site does not have dry ice or a -70 freezer on site please contact the laboratory at 266-1500 (Option 1) and request dry ice for before collected 
or 
send the patient to the Outpatient Service Center at 11141Parkview Plaza Drive,Suite100 Fort Wayne, IN Entrance 3. for collection.


Test Notes

Due to specimen required temperature this test must be drawn at the Parkview OSC Lab 


Specimen Overview

Separate specimens must be submitted when multiple tests are ordered

Specimen Requirements:

-OR-

1.0 mL Frozen Plasma from a Lavender Top Tube - EDTA in a Plastic Vial 
Minimum Volume:
0.5 mL Plasma*
Neonatal Volume:
Pediatric Volume: 500 uL Frozen Plasma from a Lavender Top Tube - EDTA in a Plastic Vial *

* This volume does not allow for repeat testing

Collection Instructions:

Mix by inverting tube 8 times

Centrifuge at ambient temperature and separate from cells within one half hour of after collection; however prefered immediately after collection

Transfer the cell-free plasma to a clean tube and immediately after centrifugatoin and freeze on dry ice or at -70° C.


Rejection Criteria:

Received Ambient

Received Refrigerated

Received Thawed

Frozen at -20°


Transport and Storage:
  • Ultra Frozen (-70° C or colder or by dry ice): 1 year

    Transport on dry ice

Clinical Interpretation

Reference Range:

Human Male: 0-2830 ng/mL
Human Female: 0-2830 ng/mL


Methodology:
  • Radioimmunoassay (RIA)
Documentation

This test uses a kit/reagent designated by the manufacturer as "for research use, not for clinical use". The performance characteristics of this test have been validated by National Jewish Clinical Reference Laboratories. It has not been cleared or approved by the US Food and Drug Administration. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions. This laboratory is certified under the Clinical Laboratory Improvement Amendments of 1988 (CLIA-88) as qualified to perform high complexity clinical laboratory testing.


Production Schedule

Sites Performed
  • National Jewish Health
Days Performed
Thursday
Departments
  • Sendouts - Miscellaneous
Turn Around Time

21 to 22 days (1st and 3rd Thur of the month)


Coding & Compliance

CDM

00913333


CPT Coding

86160