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Subclinical Hypothyroidism

Medically reviewed by Last updated on Dec 2, 2022.

Subclinical hypothyroidism is a condition that develops when your thyroid stimulating hormone (TSH) level is higher than normal. TSH is made in the brain and controls how much thyroid hormones are made. Thyroid hormones help control body temperature, heart rate, growth, and weight. Subclinical hypothyroidism can lead to hypothyroidism.

Thyroid and Parathyroid Glands


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if your blood oxygen level is lower than it should be. You may get oxygen through a mask placed over your nose and mouth or through small tubes placed in your nostrils. Ask your healthcare provider before you take off the mask or oxygen tubing.


  • Thyroid hormone replacement helps bring your thyroid hormone level back to normal.
  • Heart medicine may help strengthen or regulate your heartbeat.

Treatment options

The following list of medications are in some way related to or used in the treatment of this condition.

View more treatment options


  • Blood tests may be done to monitor your thyroid hormone level.
  • A thyroid scan may show how well your thyroid is working. Radioactive liquid is put into your IV or is given to you to drink. The part of your thyroid gland that still works absorbs the dye. Two to 48 hours later, healthcare providers use a machine called a scintillator to take pictures of your thyroid.
  • An ultrasound uses sound waves to show pictures of your thyroid on a monitor.
  • An EKG records your heart rhythm and how fast your heart beats.


Thyroid replacement hormone that is given in too high of a dose, may cause health problems. Without treatment, your condition may worsen and develop into hypothyroidism. Subclinical hypothyroidism may also increase your risk for heart disease, mental problems, depression, and low bone density.


You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.