TSH Normal Range
What does it measure?
TSH measures the pituitary hormone that signals your thyroid to produce hormones.
Reference Range
Note: Reference ranges can vary slightly between different laboratories. Always refer to the range printed on your specific lab report.
Interpreting Results
↑High TSH
A high result often suggests an underactive thyroid (hypothyroidism).
↓Low TSH
A low result often suggests an overactive thyroid (hyperthyroidism).
Frequently Asked Questions
What is a normal TSH level?
A normal TSH level for most adults is 0.4–4 uIU/mL. This is a general reference range, and your specific laboratory may use slightly different values.
What does high TSH mean?
A high TSH often suggests an underactive thyroid (hypothyroidism). Always talk to your doctor about what a high result means in your specific context.
What does low TSH mean?
A low TSH often suggests an overactive thyroid (hyperthyroidism). Always talk to your doctor about what a low result means in your specific context.
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