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Test ID AFH Factor H Autoantibody, Serum

Specimen Required

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. Immediately after specimen collection, place the tube on wet ice.

2. Centrifuge and aliquot serum into plastic vial.

3. Freeze specimen within 30 minutes.

Additional Information: If the specimen is to be shared with AHUSD / Atypical Hemolytic Uremic Syndrome Complement Panel, Serum and Plasma, only serum collected in a red-top tube is acceptable.

Useful For

Detection and quantification of antibodies to factor H


Monitoring patients with known factor H autoantibodies


Aiding in the differential diagnosis of thrombotic microangiopathy and C3 glomerulopathies

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Reporting Name

Factor H Autoantibody, S

Specimen Type

Serum Red

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Red Frozen (preferred) 28 days
  Refrigerated  28 days
  Ambient  14 days

Reference Values

<15.8 U/mL

Day(s) Performed


Report Available

2 to 8 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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 US Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
AFH Factor H Autoantibody, S In Process


Result ID Test Result Name Result LOINC Value
AFH Factor H Autoantibody, S In Process