Thyroid Function
TSH (Thyroid Stimulating Hormone)
TSH is produced by the pituitary gland. It tells your thyroid gland to make and release thyroid hormones (T3 and T4) which control metabolism.
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Information verified for medical accuracy
Why is it tested?
To find out if your thyroid is working properly (hyperthyroidism vs hypothyroidism).
What does a HIGH level mean?
- Hypothyroidism (underactive thyroid)
- Hashimoto's thyroiditis
- Inadequate thyroid medication
What does a LOW level mean?
- Hyperthyroidism (overactive thyroid)
- Graves' disease
- Too much thyroid medication
Normal Reference Range
0.4 to 4.0 mIU/L
*Ranges may vary slightly depending on the specific laboratory and testing methods used.
Related Biomarkers
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