Hormonal Test

TSH (Thyroid Stimulating Hormone)

TSH stands for thyroid stimulating hormone made by the pituitary gland. This test measures TSH levels to check if your thyroid is making the right amount of hormones. High TSH suggests underactive thyroid; low TSH suggests overactive thyroid.

Also known as: Thyrotropin test, Thyrotropic hormone, TSH test

Normal Range

Parameter	Reference Range
Normal	0.4–4.0 mIU/L
Low (Hyperthyroidism)	< 0.4 mIU/L
High (Hypothyroidism)	> 4.0 mIU/L

Who Should Take This Test?

Used to find out how well your thyroid is working. It can detect hyperthyroidism (too much thyroid hormone) or hypothyroidism (too little thyroid hormone).

How It Works

A blood sample is taken from a vein in your arm. TSH levels indicate whether your thyroid is producing the right amount of hormones.

Preparation

You may need to stop taking certain medicines before this test. If other blood tests are ordered, you may need to fast for several hours.

How Often?

As part of routine checkups, especially for women and those with symptoms or risk factors

Symptoms to Watch

Weight loss even when eating more

Rapid or irregular heartbeat

Feeling nervous or irritable

Trouble sleeping

Fatigue

Shaky hands, muscle weakness

Sweating or being very sensitive to heat

Frequent bowel movements or diarrhea

Goiter (enlarged thyroid)

Risk Factors

Family history of thyroid disease

Age over 60

Previous thyroid problems

Autoimmune conditions

Pregnancy

Related Conditions

HyperthyroidismHypothyroidismGraves' DiseaseHashimoto's DiseaseThyroid Nodules

Cost Comparison in India

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Medical Disclaimer: The information provided here is for educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider.