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HelpTest ID AFH Factor H Autoantibody, Serum
Test Down Notes
This test is temporarily unavailable. As an alternate, order ZW85, FHAB. For additional details, see test update here
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 HMonitoring 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, SSpecimen Type
Serum RedSpecimen Minimum Volume
0.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum Red | Frozen (preferred) | 28 days |
| Refrigerated | 28 days | |
| Ambient | 14 days |
Reference Values
<15.8 U/mL
Day(s) Performed
Monday
Report Available
2 to 8 daysPerforming 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. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
83520
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| AFH | Factor H Autoantibody, S | 101863-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| AFH | Factor H Autoantibody, S | 101863-9 |