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Test ID C5AG C5 Complement, Antigen, Serum

Useful For

Diagnosis of C5 deficiency

 

Investigation of a patient with an absent total complement (CH50) level

Method Name

Nephelometry

Reporting Name

C5 Complement, Antigen, S

Specimen Type

Serum


Ordering Guidance


The total complement assay (COM / Complement, Total, Serum) should be used as a screen for suspected complement deficiencies before ordering individual complement component assays. A deficiency of an individual component of the complement cascade will result in an undetectable total complement level.



Specimen Required


Patient Preparation: Fasting preferred but not required

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Centrifuge and separate serum from clot.


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 60 days
  Refrigerated  28 days
  Ambient  7 days

Reference Values

10.6-26.3 mg/dL

Day(s) Performed

Tuesday, Thursday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

86160

LOINC Code Information

Test ID Test Order Name Order LOINC Value
C5AG C5 Complement, Antigen, S 4505-4

 

Result ID Test Result Name Result LOINC Value
C5AG C5 Complement, Antigen, S 4505-4

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

Report Available

Same day/1 to 3 days

NY State Approved

Yes