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The TSH (Thyroid Stimulating Hormone) test is a blood test that measures the level of TSH in your bloodstream. TSH is a hormone produced by the pituitary gland in your brain that regulates the production of thyroid hormones by your thyroid gland. The TSH test is often used to diagnose thyroid problems, including hypothyroidism (an underactive thyroid) and hyperthyroidism (an overactive thyroid).
Here are some general guidelines on how to prepare for a TSH test:
Talk to your doctor: Before scheduling the test, talk to your doctor about why the test is needed and what you should expect. They can also give you specific instructions on how to prepare for the test.
Check if you need to stop taking certain medications: Some medications, such as thyroid hormones, can affect TSH levels in your blood. Make sure to ask your doctor if you need to stop taking any medications before the test.
Follow any other instructions: Your doctor may give you additional instructions on how to prepare for the test, such as avoiding strenuous exercise before the test or refraining from smoking.
During the test, a healthcare professional will draw blood from a vein in your arm using a needle. The blood sample is then sent to a laboratory for analysis. The results of the TSH test can usually be obtained within a few days, and your doctor will interpret the results and discuss any next steps with you if necessary.
This test measures the level of TSH in a person's blood to evaluate thyroid function. It may be recommended for people who have symptoms of thyroid disease, such as fatigue, weight changes, or hair loss, or who have risk factors for thyroid disorders such as a family history of the condition. It is also commonly included in routine checkups for women over the age of 60.
The report is usually available within a day or two.
Can be done from home using a home testing kit that involves collecting a blood sample using a fingerstick test kit.
You may be asked to fast for a certain period of time (usually 8-12 hours) before the test. Fasting means avoiding food and drink, except for water, during the specified time.