Davis's Lab & Diagnostic Tests
Antithyroglobulin Antibody and Antithyroid Peroxidase Antibody
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General
Synonym/Acronym:
Thyroid antibodies, antithyroid peroxidase antibodies (thyroid peroxidase [TPO] antibodies were previously called thyroid antimicrosomal antibodies).
Rationale
To assist in diagnosing hypothyroid and hyperthyroid disease.
Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.
Normal Findings
Method: Chemiluminescent immunoassay.
| Antibody | Conventional Units | ||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Antithyroglobulin antibody | Less than 4 international units/mL | ||||||||||||||||||||||||||||||||||||||||
| Antiperoxidase antibody | Less than 9 international units/mL | ||||||||||||||||||||||||||||||||||||||||
| Values vary by method and the testing laboratory should be consulted for corresponding ranges. | |||||||||||||||||||||||||||||||||||||||||
Critical Findings and Potential Interventions
N/A
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General
Synonym/Acronym:
Thyroid antibodies, antithyroid peroxidase antibodies (thyroid peroxidase [TPO] antibodies were previously called thyroid antimicrosomal antibodies).
Rationale
To assist in diagnosing hypothyroid and hyperthyroid disease.
Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.
Normal Findings
Method: Chemiluminescent immunoassay.
| Antibody | Conventional Units | ||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Antithyroglobulin antibody | Less than 4 international units/mL | ||||||||||||||||||||||||||||||||||||||||
| Antiperoxidase antibody | Less than 9 international units/mL | ||||||||||||||||||||||||||||||||||||||||
| Values vary by method and the testing laboratory should be consulted for corresponding ranges. | |||||||||||||||||||||||||||||||||||||||||
Critical Findings and Potential Interventions
N/A
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