Thyroglobulin

What is **Thyroglobulin Test and what is the purpose of this?**

Thyroglobulin (Tg) is a protein naturally synthesized by the thyroid gland. However, specific types of thyroid cancer can also generate Thyroglobulin. The Tg test, categorized as a tumor marker test, is designed to quantify the concentration of Thyroglobulin in the blood. Typically, physicians request Tg testing primarily to assess the progress of thyroid cancer treatment or to conduct post-treatment surveillance for any potential recurrence. Additionally, measuring Tg levels can aid in the diagnosis of particular non-cancerous thyroid conditions.

Why this test may be performed?

Testing may be performed for some reasons, including:

Postoperative evaluation

Monitoring for recurrence

Prognosis

**Also, Some doctors may check Tg levels when diagnosing hyperthyroidism and hypothyroidism,thyroid disordersthat are not cancer.**

When should I get this test?

If you are undergoing treatment for thyroid cancer, your doctor may recommend Thyroglobulin (Tg) testing, and the timing of these tests hinges on the specific reasons behind your doctor's request.

Following recent surgery for thyroid cancer, your doctor may opt to measure Tg levels to assess the comprehensive removal of thyroid cells, encompassing both noncancerous and cancerous ones. Typically, this postoperative Tg evaluation is scheduled for four to six weeks after the surgery.

Periodic testing for Tg levels is also part of the routine post-treatment monitoring for potential thyroid cancer recurrence. In the initial year following treatment, Tg-level assessments are typically scheduled every three to six months. Beyond the initial treatment and follow-up period, the frequency of testing is tailored to the unique characteristics of the cancer and its response to initial treatment.

Additionally, if your doctor suspects hyperthyroidism or hypothyroidism, they may order a Tg test to aid in the diagnosis of these thyroid conditions.

What does the test measure?

Tg tests are designed to quantify the concentration of Thyroglobulin (Tg) in the bloodstream.

The thyroid gland, a small butterfly-shaped organ located in the front of the neck just below the voice box, is responsible for producing this protein. Additionally, the thyroid gland produces hormones such as triiodothyronine (T3) and thyroxine (T4), which play crucial roles in various bodily functions, including digestion, fertility, growth, and regulating heart rate.

T3 and T4 hormones are stored as thyroglobulin within the thyroid gland before being released into the bloodstream. In individuals in good health, the thyroid gland releases Tg, along with T3 and T4, into the bloodstream at low levels. However, both papillary and follicular thyroid cancer can also generate Thyroglobulin. Consequently, individuals with thyroid cancer may exhibit higher Tg levels compared to those without the condition.

How can I get a thyroglobulin test?

To measure Thyroglobulin (Tg) levels, you'll need a healthcare professional to request the test. Typically, the sample required for Tg testing is collected at a doctor's office, medical clinic, or laboratory.

What is the preparation for this test?

Generally, there's no specific test preparation required before undergoing a Thyroglobulin (Tg) test. However, if you have any inquiries regarding how to prepare for the test, you can discuss them with your doctor. To ensure precise results, it is crucial to adhere to any pre-test instructions provided by either your doctor or the laboratory.

When can I get the result of the test?

You can receive the result within 24 hours in Lilium Diagnostics laboratory.