If you are experiencing symptoms like fatigue, weight changes, or hair loss despite a normal TPO result, your doctor may look for non-autoimmune causes or monitor your levels over time.
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: If you are experiencing symptoms like fatigue, weight
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.
Most labs define a normal TPO result as anything between 0 and 34 IU/mL .