Test Algorithms
Celiac Disease Serology Cascade
| CDSP/89199 Celiac Disease Serology Cascade Testing begins with Immunoglobulin A (IgA), Serum |
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| Normal IgA (within age-matched reference values) |  |
| Low IgA ( ≥1 mg/dL but below the age-matched reference values) | |
| Deficient IgA (<1 mg/dL) | |