2 - 7 days
Test Updated:
Complement AH50
AH50
Looking to order a test?
We’ve provided helpful links to make ordering easy.
Find a RequisitionAll specimens should be accompanied by a requisition.
Submitting SpecimensLearn about how to properly label and where to ship specimens.
Order Kits and SuppliesMLabs provides all the supplies necessary for the collection of specimens.
Test FAQVisit our provider FAQ and learn about common questions to ordering tests.
Test Overview
Enzyme-Linked Immunosorbent Assay (ELISA)
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.
> or = 45% of normal
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen Requirements
Collect specimen in a red top tube from a fasting patient do not use SST tube. Send to Specimen Perocessing in a green bag. Must be spun within 30 minutes.
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.