Laboratory "normal ranges" can vary slightly. You should always compare your result against the specific reference range provided on your lab report.
The most common cause of hypothyroidism (underactive thyroid). thyroid peroxidase level 9
The Thyroid Peroxidase antibody test measures the amount of antibodies your immune system produces against an enzyme (TPO) found in the thyroid gland. Laboratory "normal ranges" can vary slightly
An autoimmune cause of hyperthyroidism (overactive thyroid). Next Steps and Considerations thyroid peroxidase level 9
Doctors usually order this test to help diagnose or rule out autoimmune thyroid conditions:
A is typically considered normal or "negative" by most laboratories . What Does This Level Mean?
Most labs define a normal TPO result as anything between 0 and 34 IU/mL .