TSH Test
Also known as: Thyroid Stimulating Hormone
Category: HormonesSample: BloodReport in: Same Day
TSH alone is the best single screening test for thyroid problems.
Why it's done
- Screen for thyroid disease
- Adjust levothyroxine dose
What it measures
Thyroid stimulating hormone.
Preparation
Usually no fasting.
Normal range
About 0.4-4.5 mIU/L
Understanding results
High TSH means low thyroid function; low TSH means overactive thyroid.
Related conditions
Ordered by
Frequently asked questions
Why is the TSH Test test done?
Screen for thyroid disease, Adjust levothyroxine dose
How do I prepare for TSH Test?
Usually no fasting.
What is the normal range for TSH Test?
About 0.4-4.5 mIU/L
Medically reviewed by
Medical review pending
Last updated
9 October 2026
Sources
- ICMR standard treatment workflows
- Reference ranges vary by laboratory - always read your report with your doctor
This information is for general awareness and does not replace advice from a qualified doctor. Do not start, stop or change any medicine without medical advice.