Let’s get to know all this important information about Thyroglobulin Test: Diagnosis, Preparing,Normal value, Interpretation in the following article.
About the examination
Screening type: Thyroglobulin Test
Unit of measurement: ng/ml
This test measures the level of thyroglobulin in the blood, a protein made by cells in the thyroid gland. The thyroid gland is a small butterfly-shaped gland located near the throat. This test is often used as a tumor indicator, to help guide the treatment of thyroid cancer.
A tumor index, sometimes called cancer markers, is a substance made by cancer cells or natural cells in response to cancer in the body. It is worth mentioning that thyroglobulin is made by both natural and cancerous thyroid cells.
The main goal of thyroid cancer treatment is to get rid of all thyroid cells. It is usually done by removing the thyroid gland through surgery, followed by radioiodine therapy, a drug used to destroy any thyroid cell that is left after surgery. It is often given in a liquid or in a capsule.
After treatment, there should not be or have a little thyroglobulin in the blood. Measuring levels of thyroglobulin can show whether thyroid cancer cells are still in the body after treatment.
This test is used for diagnosis
-Find out if thyroid cancer treatment is successful. If thyroglobulin levels remain the same or increase after treatment, it may mean that there are still thyroid cancer cells in the body. If thyroglobulin levels decrease or disappear after treatment, it may mean that there are no normal or cancerous thyroid cells in the body.
– Find out if the cancer has returned after successful treatment.
– The healthy thyroid will manufacture thyroglobulin. Therefore, this test is not used to diagnose thyroid cancer.
Reasons for the test
You will take this test after treatment for thyroid cancer. Your doctor may order a regular examination to see if any thyroid cells remain after treatment. You may be tested every few weeks or months, shortly after treatment is over. After that, you will be tested at intervals.
How the test is performed
During the test, a laboratory specialist takes a blood sample from one of the veins in your arm using a small needle. After the needle is inserted into the vein, a small amount of blood will be collected in the test tube for later analysis in the laboratory using special devices. It should be remembered that this test takes no more than five minutes, during which you will only feel a small tingling when the needle is inserted into and removed from the vein.
How is the patient preparing for the test ?
This analysis does not require any special equipment. However, you may be asked to avoid taking certain vitamins or supplements. The specialist will tell you if you need to avoid them or take any other special steps.
Risks of screening
There is very little risk of this analysis, as you will feel a tingling, a slight pain or mild bruising where the blood sample is removed that disappears during days and there is no risk.
Interpretation of the results of the examination
The test is likely to be performed several times, shortly after the end of treatment, and then each period thereafter. The results may appear as follows:
– Thyroglobulin levels are elevated or increased over time: this may mean that thyroid cancer cells grow or the cancer begins to spread.
– Thyroglobulin levels are low or there is no thyroglobulin: indicates that cancer treatment has removed all thyroid cells from your body.
– Levels of thyroglobulin decreased for a few weeks after treatment and then increased over time: indicates that the cancer returned after successful treatment.
If your results show that thyroglobulin levels are increasing, your doctor may prescribe additional radiation iodine therapy to get rid of the remaining cancer cells. Talk to your healthcare provider if you have questions about outcomes or treatment.
Read More cancer
Although this test is used as an indicator of tumors, it is sometimes used to help diagnose thyroid disorders:
– Hyperthyroidism: a condition of a lot of thyroid hormone in the blood.
– Hypothyroidism: a condition that does not have enough thyroid hormone.
Reasons for high reading
NB: This pharmaceutical information does not preclude a doctor or pharmacist visit. We do not recommend any medication without medical consultation.