How Do You Test for Subclinical Hyperthyroidism?

The Essential Blood Tests

Subclinical hyperthyroidism is primarily diagnosed through blood tests measuring thyroid hormone levels. The tests look for normal levels of free thyroxine (T4) and triiodothyronine (T3) but a low level of thyroid-stimulating hormone (TSH). These tests are crucial for identifying the condition, especially since symptoms are often absent.

Confirming the Diagnosis

If initial tests suggest subclinical hyperthyroidism, repeat testing is often recommended. This is because TSH levels can fluctuate, and a confirmed diagnosis requires consistent results. Repeated measurements over one to three months help ensure the accuracy of the diagnosis.

Identifying the Cause

Once diagnosed, further tests can help determine the cause of subclinical hyperthyroidism. Thyroid imaging and antibody tests might be performed to distinguish between different underlying conditions. Understanding the cause is key to deciding on the best management plan.

Frequently Asked Questions

Key Takeaways

Could a simple blood test reveal your thyroid's secrets?

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• How to Prevent Complications from Subclinical Hyperthyroidism

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