Test Overview
Test Methodology
Enzyme-Linked Immunosorbent Assay (ELISA)
Test Usage
The AH50 assay is a useful screening tool for homozygous deficiencies of Alternative Pathway components including C3, factor I, factor B, properdin, factor H and factor D.
Reference Range *
> or = 46% of normal
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Analytic Time
2 - 7 days
Soft Order Code
AH50
MiChart Code
Complement, Total Alternative Path (AH50)
Synonyms
- Complement AH50
- AH50
Laboratory
Sendout
Reference Laboratory
Mayo AH50 (88676)
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect specimen in a red top tube from a fasting patient; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and freeze within 30 minutes.
Special Handling
Fasting specimen.
Normal Volume
0.5 mL serum
Minimum Volume
0.2 mL serum
Storage Temperature
Frozen: 14 days.
Additional Information
Test sent to Mayo Medical Laboratories.
Billing
CPT Code
86161
Fee Code
20493
LOINC
13087-2