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Thyroxine Binding Globulin

Thyroxine Binding Globulin near me in Varanasi

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The Thyroxine Binding Globulin test is a blood test that measures the level of thyroxine binding globulin (TBG), a protein that binds thyroid hormones. It helps interpret thyroid hormone tests  when total T3/T4 levels are discordant with clinical findings. This test is widely available with Tata 1mg labs at an affordable price in Varanasi.

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Understanding Thyroxine Binding Globulin

Thyroxine binding globulin (TBG) is a protein produced by the liver that carries thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), in the blood. Only a small fraction of thyroid hormones circulates freely, while most are bound to proteins like TBG. The Thyroxine Binding Globulin test measures how much of this protein is present in the blood, which affects interpretation of total thyroid hormone levels and helps assess hormone transport.

Doctors may recommend this test when there are general symptoms suggestive of thyroid imbalance such as constipation, dry skin, diarrhea, puffy skin, tiredness, hair loss, weakness, sensitivity to cold or heat, fast heartbeat, weight changes, or irregular periods, particularly when thyroid hormone results (total T3/T4) appear unusual or unclear relative to free hormone levels or clinical picture. This test is advised for conditions affecting hormone-binding proteins, such as pregnancy, liver disease, nephrotic syndrome, or suspected genetic TBG disorders.

No special preparation is required for the Thyroxine Binding Globulin test. Inform the doctor about all the medications and supplements currently being taken, as these may affect the test results.

Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Do not self- diagnose and always consult a doctor to understand the test results correctly. 

Please note: This is an outsourced test. The sample for this test is collected by TATA 1MG and processed at a NABL accredited partnered lab.

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What does Thyroxine Binding Globulin measure?

The Thyroxine Binding Globulin test measures the level of thyroxine-binding globulin, the protein that binds thyroid hormones in the blood. By controlling how much hormone is bound and free, TBG regulates the amount of active thyroid hormone available to tissues.

High TBG levels may be seen in pregnancy, estrogen therapy, or certain liver diseases, whereas low TBG levels may occur in protein deficiency, severe illness, or androgen therapy. Abnormal TBG levels can alter total T4 and T3 measurements, so the Thyroxine Binding Globulin test helps doctors interpret thyroid hormone tests more accurately and support clinical decision-making.

FAQs related to Thyroxine Binding Globulin in Varanasi

The Thyroxine Binding Globulin test measures the level of thyroxine-binding globulin, a protein that carries thyroid hormones (T3 and T4) in your blood. It helps doctors understand how thyroid hormones are transported and how much is available to your body.
Thyroid hormones are mostly bound to proteins like TBG. Abnormal TBG levels can affect total thyroid hormone levels, so this test helps doctors interpret thyroid function tests accurately.
Your doctor may recommend it: If your total T3 or T4 levels are abnormal; To check thyroid function during pregnancy or hormone therapy; If there is suspected liver or kidney disease; To evaluate suspected genetic TBG deficiencies or excesses.
No, fasting is not required for the TBG test. You can eat and drink as usual unless your doctor tells you otherwise.
It is just a simple blood test with minimal risk (minor needle discomfort/bruising). You might feel a small pinch when the needle is inserted, but it is quick and usually not very painful.
Yes. In Varanasi, you can schedule the Thyroxine Binding Globulin test near you with Tata 1mg Labs. The test is easy to book, cost-effective, and available with a comprehensive report.
Yes, home sample collection for the Thyroxine Binding Globulin test is readily available in Varanasi. Tata 1mg Labs allows you to choose a date and time that suits your schedule for sample collection.
If you want to schedule the Thyroxine Binding Globulin test with Tata 1mg Labs in Varanasi, the procedure is fairly easy and hassle-free. Follow these steps to book a test: 1). Visit the Lab Tests section on the Tata 1mg website. 2). Add the test you want to the cart. 3). Pick a time and date slot according to your convenience; however, do consider the necessary prerequisites while scheduling a test. 4). You will receive a notification with all the details once the test is scheduled.
Tata 1mg Labs is a pocket-friendly platform for booking lab tests in Varanasi. The Thyroxine Binding Globulin test is available at an affordable price of Rs. 6159.
At Tata 1mg Labs, we understand the importance of timely results. We strive to provide fast turnaround times for test results, allowing you to get the information you need promptly. On average, we take 96 hours to provide the reports of the Thyroxine Binding Globulin test in Varanasi.
Content created by
Written by:
Dr. Lipika Khurana
BDS, PGDHHM
Reviewed by:
Dr. Swati Gupta (Anand)
MD Lab Medicine, MBBS
Want to know moreRead our editorial policy
Last Updated7th Feb 2026

Thyroxine Binding Globulin test price for other cities

Price inBangaloreRs. 6159
Price inAligarhRs. 6159
Price inDehradunRs. 6940
Price inAsansolRs. 6159
Price inChandigarhRs. 6159

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Thyroxine Binding Globulin