thyroid · Biomarker
TSH
The pituitary signal that regulates thyroid hormone output — the primary thyroid screening marker.
Clinical range
0.4–4 mIU/L
Longevity-optimal target
0.5–2.5 mIU/L
How to improve your TSH
Thyroid results should always be interpreted alongside symptoms by a clinician, not in isolation.
Frequently asked questions
What is a normal TSH level?
The standard clinical reference range for TSH is 0.4–4 mIU/L. Individual labs vary — interpret alongside your full picture and a clinician.
What is the optimal TSH for longevity?
A commonly-proposed longevity-oriented target for TSH is 0.5–2.5 mIU/L. This is a wellness convention, not a universal clinical threshold.
What does TSH measure?
The pituitary signal that regulates thyroid hormone output — the primary thyroid screening marker.
How do I improve my TSH?
Thyroid results should always be interpreted alongside symptoms by a clinician, not in isolation. Educational only — confirm any change with your clinician.
Educational information only — not medical advice, a diagnosis, or a recommendation to use any substance or therapy. Regulatory status changes; verify current rules and any personal decision with a licensed clinician. Jevity is operated by Upcapital Global FZCO, Dubai, UAE.