1. What is TSH?

TSH (Thyroid Stimulating Hormone) is a hormone produced by the pituitary gland that regulates the production of thyroid hormones. Measuring TSH levels helps assess thyroid function and diagnose thyroid disorders.

2. How Does the Calculator Work?

The calculator directly reports your TSH blood test result:

Where:

• \( TSH \) — Thyroid Stimulating Hormone level (mIU/L)

3. Importance of TSH Measurement

Details: TSH measurement is crucial for diagnosing thyroid disorders such as hypothyroidism (high TSH) and hyperthyroidism (low TSH), and for monitoring thyroid hormone replacement therapy.

4. Using the Calculator

Tips: Enter your TSH blood test result in mIU/L. The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What are normal TSH values?
A: Normal TSH levels typically range from 0.4 to 4.0 mIU/L, though reference ranges may vary slightly between laboratories.

Q2: What does a high TSH level indicate?
A: High TSH levels usually indicate an underactive thyroid (hypothyroidism), where the thyroid gland isn't producing enough thyroid hormones.

Q3: What does a low TSH level indicate?
A: Low TSH levels typically indicate an overactive thyroid (hyperthyroidism), where the thyroid gland is producing too much thyroid hormone.

Q4: When should TSH be tested?
A: TSH testing is recommended when symptoms suggest thyroid dysfunction, for routine screening in at-risk populations, or to monitor thyroid treatment.

Q5: Are there factors that can affect TSH levels?
A: Yes, factors such as pregnancy, certain medications, acute illness, and time of day can affect TSH levels. It's usually best measured in the morning.