TSH checker — what your thyroid result means
Enter your TSH (mIU/L) to see where it falls — low, normal, mildly elevated (subclinical) or significantly elevated — with a plain-English interpretation, the tests to request next, and what a GP versus an endocrinologist would typically do.
— mIU/L
Medical disclaimer: This calculator is for general educational purposes only and does not constitute medical advice or a diagnosis. Results are estimates based on the values you enter and standard formulas and reference ranges, which vary between laboratories and between individuals. Always discuss your results with a qualified healthcare professional. If you are experiencing a medical emergency, call 9-1-1.
Get an endocrinologist to review your thyroid results — $45
Upload your TSH, Free T4 and antibody results and get a written opinion from a PGIMER/AIIMS-trained endocrinologist within 6 hours — what your numbers mean, what to test next, and what to say to your GP. No referral needed.
Frequently asked questions
What is a normal TSH level?
Most labs use a reference range of roughly 0.4–4.0 mIU/L, though this varies by laboratory and is lower in pregnancy. A single result should be interpreted with your symptoms and, where relevant, Free T4 and thyroid antibodies.
What does a mildly high TSH (subclinical) mean?
A TSH between about 4 and 10 with a normal Free T4 is subclinical hypothyroidism. It is common and does not always need treatment — the decision depends on symptoms, anti-TPO antibodies, cholesterol and whether you are planning pregnancy. Our guide to a TSH of 6.8 walks through this.
What tests should I ask for after an abnormal TSH?
Usually Free T4 and anti-TPO (thyroid peroxidase) antibodies, and a repeat TSH, since a single value can fluctuate. A low TSH may also prompt Free T3 and TRAb antibodies. Ask for the full panel so the specialist has what they need.
Can Ginie Health review my thyroid results?
Yes. A written opinion from a PGIMER/AIIMS-trained endocrinologist costs $45 CAD, delivered within 6 hours, with no referral needed — helpful for understanding your TSH and knowing what to push for while you wait for a Canadian endocrinology appointment.