Thyroid Stimulating Hormone (TSH), Ultrasensitive Test
Thyroid Stimulating Hormone (TSH), Ultrasensitive
A Thyroid Stimulating Hormone (TSH), ultrasensitive test is used to measure the TSH levels in the blood. The pituitary gland in your brain produces TSH, which makes the thyroid gland secrete thyroid hormones (T3 and T4) in the blood.
When compared to the usual TSH test, the TSH, Ultrasensitive is a more sensitive test for accurately and precisely diagnosing thyroid disorders in their early stages. Thus, healthcare providers order this test to detect underlying thyroid diseases and monitor the efficacy of ongoing thyroid treatment
Symptoms of an overactive thyroid:
Anxiety
Difficulty in sleeping
Tiredness
Sensitivity to heat
Diarrhea
Persistent thirst
Itchiness
Symptoms of an underactive thyroid:
Tiredness
Sensitivity to cold
Weight gain
Constipation
Depression
Muscle aches and weakness
What is this test used for?
Thyroid Stimulating Hormone (TSH), ultrasensitive test is recommended for:
Checking how well the thyroid gland is working
Diagnosing thyroid disorders like hyperthyroidism and hypothyroidism
Monitoring the results of treatment for people with thyroid conditions
Screening for thyroid diseases in pregnant women
Screening for thyroid diseases in newborns
Test preparation
No special preparation is required for a TSH, ultrasensitive test. Ensure your doctor is aware of what prescription drugs, over-the-counter medicines, or dietary supplements you are taking. Ask your doctor for details about pre-test preparations, and make sure to follow instructions closely
Interpretation of the Test Results
The units of measurement for the results are Micro-International Units per Millilitre (mIU/mL).
|
Thyroid Stimulating Hormone (TSH) |
Normal levels |
|
Infants (up to 5 days old) |
0.7-15.2 mIU/mL |
|
Infants (6 - 90 days old) |
0.72-11.0 mIU/mL |
|
Babies (4 - 12 months old) |
0.73-8.35 mIU/mL |
|
Kids (1 - 6 years old) |
0.7-5.97 mIU/mL |
|
Kids (7 - 11 years old) |
0.6-4.84 mIU/mL |
|
Teens and young adults (12 - 20 years old) |
0.51-4.3 mIU/mL |
|
Adults (21 99 years old) |
0.27-4.2 mIU/mL |
During Pregnancy:
|
Thyroid Stimulating Hormone (TSH) |
Normal levels during pregnancy |
|
First trimester |
0.18-2.99 mIU/mL |
|
Second trimester |
0.11-3.98 mIU/mL |
|
Third trimester |
0.48-4.71 mIU/mL |
Depending on a person's age, sex, and body weight, normal TSH ranges can vary.
Deviation from normal levels indicates the following:
· Higher than normal TSH levels may be due to conditions like an underactive thyroid gland (hypothyroidism), Hashimoto disease, malnutrition, or severe acute illness.
Lower than normal TSH levels may be due to an overactive thyroid gland (hyperthyroidism), which can be caused by conditions like pituitary disorder, Grave’s disease, toxic nodular goitre or multinodular goitre, too much iodine in the body, and taking too much thyroid hormone medicine
FAQs
How is the sample collected for Thyroid Stimulating Hormone (TSH), Ultrasensitive test?
A blood sample is taken from a vein in the arm using a fine needle. This procedure typically takes no longer than five minutes
What is the turnaround time (TAT) for the results of Thyroid Stimulating Hormone (TSH), Ultrasensitive test?
What are the risks associated with Thyroid Stimulating Hormone (TSH), Ultrasensitive test?
This test involves negligible risk. There might be slight pain or tenderness around the site where the needle is inserted. Rarely, the site can become infected
What factors can affect the Thyroid Stimulating Hormone (TSH), Ultrasensitive test results?
Several factors, including diet, certain illnesses, stress, and irregular sleep, can affect the TSH, Ultrasensitive test results. Some medications, like glucocorticoids and steroids; opioid painkillers such as morphine and dopamine; and certain chemotherapy drugs, may also affect your test results
What causes elevated TSH levels in newborns?
Elevated TSH levels in newborns are commonly caused by congenital hypothyroidism. Higher than normal TSH levels can also result from transient hypothyroidism brought on by neonatal illness, premature birth, an iodine excess or deficiency, and other conditions. If the mother is taking medications that might affect her thyroid hormone levels or if she has an underlying thyroid condition, then high TSH may also be present in the newborn
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