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Thyroid Profile

Thyroid Profile


Thyroid Function Test panel measures the levels of total thyroxine T-4, total triiodothyronine T-3 and thyroid stimulating hormone (TSH) in blood. Thyroid function tests are a series of blood tests used to measure how well your thyroid gland is working. Available tests include the T3, T3RU, T4, and TSH.

The thyroid is a small gland located in the lower-front part of your neck. It?s responsible for helping to regulate many of the body?s processes, such as metabolism, energy generation, and mood.


Inform your doctor if you are on any medications, have any allergies or underlying medical conditions before your T3 T4 TSH. Your doctor will give specific instructions depending on your condition on how to prepare for T3 T4 TSH.

There are no specific preparations required for the Thyroid Profile Total test.

Normal range

A normal result 0.5 to 2.0 nanograms per milliliter (ng/mL). Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your provider about the meaning of your specific test results. People with type 2 diabetes, obesity, and insulin resistance may have a high C-peptide level that is normal for them.

Result explanation

If the test results are in normal range then the thyroid gland is functioning normally and no need for further medical intervention.

In the case of increased T3 and T4 levels in the blood than the normal range then it may be due to transient hyperthyroidism, Hashimoto's thyroiditis (an auto-immune disorder where the immune system of own body attacks the thyroid gland and decreases the production of hormones that are required for the body), Grave?s disease (an immune system disorder which results in the overproduction of thyroid hormones), subacute thyroiditis (acute inflammation of the thyroid gland), toxic adenoma (increased hormone production from single large nodule/lump in the thyroid gland), toxic multinodular goiter, thyroid cancer, increased production of thyroid stimulating hormone.

If the levels of T4 and T3 are less than the normal range then it may be due to hypothyroidism, previous treatment of hyperthyroidism, subacute thyroiditis (acute inflammation of the thyroid gland), neck radiotherapy before the test, iodine deficiency or excessive iodine, pituitary dysfunction, idiopathic myxedema (severe hypothyroidism), tissue resistance to thyroid hormone, starvation, or long-term illness, etc.

If TSH levels alone increased and T4, T3 levels are within the range then it may be due to mild hypothyroidism.

In case of reduced levels of TSH, it may indicate hyperthyroidism. If all the three TSH, T4 and T3 levels are low then it may be caused by nonthyroidal illness or pituitary hypothyroidism.

Gender Age groups Value

UNISEX All age groups 80 - 200ng/dl UNISEX All age groups 4.5 - 11.7 mcg/dl

Common uses

C-peptide is measured to tell the difference between insulin the body produces and insulin someone injects into their body. Someone with type 1 or type 2 diabetes may have their C-peptide level measured to see if their body is still producing any insulin. It may also be measured in cases of low blood sugar to see if the person's body is producing too much insulin.

Customer support

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