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26126 C4a Level (FC4AL)

C4a Level (FC4AL)
Test Code: FC4ASO
Synonyms/Keywords

​C4 anaphylatoxin

Complement C4a Level

C4a Level

C4ades Arg Level

Specimen Requirements
 
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​No​Plasma​EDTA Lavender Top Tube (LTT)​​2 mL​0.5 mL​
Collection Processing Instructions
Mix well, centrifuge at ambient temperature within one half hour of draw (preferably immediately after venipuncture), and freeze immediately on dry ice or at -70 C. Send 1 mL of EDTA plasma frozen in plastic vial; transport on dry ice. Complete National Jewish Complement request form and submit with specimen.
Specimen Stability Information
Specimen Type Temperature Time
​Plasma ​Frozen ​365 days
Rejection Criteria
Plasma gel tubes
​Gross hemolysis
​Thawed specimens
Performing Laboratory Information
Performing Location Day(s) Test Performed Report Available Methodology/Instrumentation
​Mayo Medical Labs forwards to National Jewish Health ​Monday through Friday. ​23-44 days ​Radioimmunoassay (RIA)
Reference Lab
Mayo Clinic Laboratories
Test Information

This test should be regarded as 'Research Use Only'.  It may not be covered by insurance and providers need to inform all patients of this prior to ordering. 

For Medicare patients, an Advanced Beneficiary notice (ABN) is required; for Medicaid patients, a Noncovered Services Waiver is required, and for commercial payers, prior authorization should be obtained.   ​​

Reference Range Information
Performing Location Reference Range
​Mayo Medical Labs forwards to National Jewish Health ​0 - 2830 ng/mL
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​86160 ​ ​1 ​ ​
Classification

This test should be regarded as 'Research Use Only'. This test uses a kit/reagent designated by the manufacturer as for research use, not for clinical use. The performance characteristics for this test have been validated by National Jewish Health. It has not been cleared or approved by the U.S. 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 clinival laboratory testing.

This test may not be covered by insurance and providers need to inform all patients of this prior to ordering. 

For Medicare patients, an Advanced Beneficiary notice (ABN) is required; for Medicaid patients, a Noncovered Services Waiver is required, and for commercial payers, prior authorization should be obtained.   ​​

Synonyms/Keywords

​C4 anaphylatoxin

Complement C4a Level

C4a Level

C4ades Arg Level

Ordering Applications
Ordering Application Description
​Cerner ​C4a Level (FC4AL)
​COM ​C4a Level (FC4AL)
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
 
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​No​Plasma​EDTA Lavender Top Tube (LTT)​​2 mL​0.5 mL​
Collection Processing
Mix well, centrifuge at ambient temperature within one half hour of draw (preferably immediately after venipuncture), and freeze immediately on dry ice or at -70 C. Send 1 mL of EDTA plasma frozen in plastic vial; transport on dry ice. Complete National Jewish Complement request form and submit with specimen.
Specimen Stability Information
Specimen Type Temperature Time
​Plasma ​Frozen ​365 days
Rejection Criteria
Plasma gel tubes
​Gross hemolysis
​Thawed specimens
Reference Range Information
Performing Location Reference Range
​Mayo Medical Labs forwards to National Jewish Health ​0 - 2830 ng/mL
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Report Available Methodology/Instrumentation
​Mayo Medical Labs forwards to National Jewish Health ​Monday through Friday. ​23-44 days ​Radioimmunoassay (RIA)
Reference Lab
Mayo Clinic Laboratories
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​86160 ​ ​1 ​ ​
Classification

This test should be regarded as 'Research Use Only'. This test uses a kit/reagent designated by the manufacturer as for research use, not for clinical use. The performance characteristics for this test have been validated by National Jewish Health. It has not been cleared or approved by the U.S. 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 clinival laboratory testing.

This test may not be covered by insurance and providers need to inform all patients of this prior to ordering. 

For Medicare patients, an Advanced Beneficiary notice (ABN) is required; for Medicaid patients, a Noncovered Services Waiver is required, and for commercial payers, prior authorization should be obtained.   ​​

For most current information refer to the Marshfield Laboratory online reference manual.