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 = 45% 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.

Yellow Top Tube
Red Top Tube
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
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