Convert any Thyroid-Stimulating Hormone (TSH) result between units on the unit converter.
What is the normal range for Thyroid-Stimulating Hormone (TSH)?
The standard teaching reference range for Thyroid-Stimulating Hormone (TSH) is 0.4–4 mIU/L. This value is measured in serum.
Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population — always use the range printed on the actual result.
Above the range
Common causes of a high Thyroid-Stimulating Hormone (TSH)
Primary hypothyroidism
Hashimoto thyroiditis
Recovery from illness
Some medications
Below the range
Common causes of a low Thyroid-Stimulating Hormone (TSH)
Primary hyperthyroidism (Graves)
Excess thyroid hormone replacement
Central hypothyroidism
At the bedside
Nursing considerations
The most sensitive single screen for thyroid function.
Moves opposite to thyroid hormone: high TSH = underactive thyroid.