Reference Interval:
| Immunoglobulin A, Serum
| 0-30 days: 1-7 mg/dL
1 month: 1-53 mg/dL
2 months: 3-47 mg/dL
3 months: 5-46 mg/dL
4 months: 4-72 mg/dL
5 months: 8-83 mg/dL
6 months: 8-67 mg/dL
7-8 months: 11-89 mg/dL
9-11 months: 16-83 mg/dL
1 year: 14-105 mg/dL
2 years: 14-122 mg/dL
3 years: 22-157 mg/dL
4 years: 25-152 mg/dL
5-7 years: 33-200 mg/dL
8-9 years: 45-234 mg/dL
10 years and older: 68-378 mg/dL
| | Endomysial Antibody, IgA Screen
| None detected
| | Endomysial Antibody, IgA Titer
| <1:10
| | Tissue Transglutaminase Antibody, IgG by ELISA
| < 20 EU: None detected
20-30 EU: Weakly positive
> 30 EU: Positive
| | Gliadin Peptide Antibody, IgA
| 19 Units or less: Negative
20-30 Units: Weak Positive
31 Units or greater: Positive
| | Gliadin Peptide Antibody, IgG
| 19 Units or less: Negative
20-30 Units: Weak Positive
31 Units or greater: Positive
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| Interpretive Data: |
Refer to individual components.
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| Note: |
If IgA < 7 mg/dL, then tTG IgG will be added. If tTG IgG is < 20 U and patient is < 3 years of age, then Gliadin Peptide IgG & IgA will be added.
If IgA is ³ 7 mg/dL, then tTG IgA will be added. If tTG IgA is positive, then EMA IFA titer will be added. If tTG IgA is negative and patient is < 3 years of age, then Gliadin Peptide IgG & IgA will be added.
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| CPT Code(s): |
82784 IgA; if < 7 mg/dL, add 83516 tTG IgG; if negative and patient is < 3 years of age, add 83516 x2 Gliadin IgG & IgA. If IgA is greater than or equal to 7, add 83516 EMA; if EMA is positive, add 86256 EMA Titer
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