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Read our Thyroid Tests Guide guide →
The TSH test is used to assess the function of the thyroid gland, a ductless gland located just below the Adam’s apple in the neck. The thyroid secretes hormones that play a critical role in regulating how various organs in the body use energy and manage mineral levels in the blood. This test is commonly performed to diagnose and identify the cause of hypothyroidism (underactive thyroid) or hyperthyroidism (overactive thyroid).
The TSH test is crucial for diagnosing a variety of thyroid-related disorders, including:
Hyperthyroidism: When thyroid hormone levels are too high, leading to symptoms such as weight loss, rapid heartbeat, and anxiety.
Hypothyroidism: When thyroid hormone levels are too low, causing fatigue, weight gain, and cold intolerance.
Thyroid Nodules and Thyroid Cancer: Abnormal growths or tumors in the thyroid that may affect hormone production.
The TSH test involves a simple blood draw from your arm. The blood sample is then sent to a lab for analysis. The test can be performed at any time of day and typically does not require any special preparation, such as fasting overnight.
Doctors may order additional thyroid-related tests, such as measurements of T3, T4, and thyroid antibodies (like thyroid peroxidase antibodies) to get a more complete picture of your thyroid function. Based on the results of your tests, your doctor will discuss possible treatment options and next steps.
The TSH test is a reliable and efficient way to evaluate thyroid health, helping healthcare professionals to diagnose thyroid disorders early and accurately. If thyroid disease is detected, appropriate treatment can be started to manage symptoms and restore thyroid function.
Test Type: Blood
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Most doctors start with TSH; extended panels may include Free T3, Free T4, and thyroid antibodies. Your physician can recommend the right panel based on symptoms.
Fasting is generally not mandatory for thyroid tests unless combined with other fasting panels. Morning samples are often preferred — check your booking details.
Routine thyroid panels are typically reported within 24–48 hours after lab processing.
Yes. CoreLab schedules home sample collection for thyroid tests across Gurugram with trained phlebotomists.
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