All Thyroid Tests

All Thyroid Tests brings together the labs used to evaluate thyroid function, screen for autoimmune thyroid disease, and monitor treatment or cancer follow-up. Thyroid hormones influence energy, weight, mood, heart rate, fertility, and temperature regulation. Because symptoms can overlap with other conditions, a stepwise, lab-first approach helps you and your clinician find answers quickly and track trends over time.

Most people start with TSH (thyroid-stimulating hormone), then add Free T4 (and sometimes Free T3) ... See more

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 The Thyroid Panel with Ferritin and Vitamin D is a specialized set of tests designed to evaluate thyroid function, iron storage, and vitamin D levels. This panel is integral for assessing the intricate relationship between thyroid health, iron metabolism, and bone health, offering a comprehensive overview that extends beyond standard thyroid testing. By combining these specific tests, healthcare providers can gain insights into a patient's overall endocrine function and nutritional status, which are critical for diagnosing and managing various health conditions.
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The TSH and Free T4 Test measures thyroid-stimulating hormone (TSH) and free thyroxine (T4) to evaluate thyroid function. Together, these tests help diagnose hypothyroidism, hyperthyroidism, and pituitary disorders. Doctors order this test to investigate fatigue, weight changes, hair loss, or irregular heartbeat and to monitor thyroid replacement or antithyroid therapy. It provides key insight into hormone balance, metabolism, and overall endocrine health.


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Blood, Serum, Plasma-Unspecified Vial Pour, Other
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Blood, Serum, Plasma-Unspecified Vial Pour
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Plasma-Unspecified Vial Pour, Random, Serum, Blood
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Serum, Blood, Plasma-Unspecified Vial Pour
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This article will cover the thyroid biomarkers. This will include the thyroid-stimulating hormone, also known as TSH. We’re also going to look at T3 and T4, both free and total in each case. We’ll also cover reverse T3 and investigate a new ratio, being the free/reverse T3 ratio. Also, we’re going to look at a few older markers, too, including the free thyroid index called T7. Then, we’ll move on to T3 uptake and move on to two of the most essential antibodies. Finally, we’ll investigate antithyroglobulin antibodies, thyroid peroxidase, and anti-TPO. 

In terms of TSH, it’s useful for many different reasons. First, we can use it for both the determination of hypothyroidism as well as the potential differentiation of it. It’s also effective for both hyperactive thyroid and the ... See more

TSH (Thyroid-Stimulating Hormone)

Test: TSH (Thyroid-stimulating Hormone)

Why have this test? 

This Thyroid-Stimulating Hormone is used to check for and diagnose disorders of the thyroid. It is also used to monitor the ongoing treatment of both hyperthyroidism and hypothyroidism.

When Should You be Tested?

Screening is commonly recommended for newborns. There is no medical consensus as to the adult age for screening or whether adult screening should be standard.

Treatment monitoring: As recommended by your medical provider

Other Situations:  If an individual has an enlarged thyroid and/or has experienced the symptoms of hypothyroidism or hyperthyroidism.

Required Sample Type: A sample of blood taken from a vein in the arm, or for infants, from pricking the heel.

Preparation for the Test: There is ... See more

The thyroid is located at the base of the neck. It is a small, butterfly-shaped gland that produces thyroid hormones such as thyroxine or T4 and triiodothyronine or T3.  These hormones are required for the regulation of the metabolism as they tell your cells how fast to use energy and produce protein.  This gland is also responsible to produce calcitonin, which is the hormone that regulates calcium levels in the blood by preventing the breakdown of bone.  It also increases the elimination of calcium from the kidneys.  To control the amounts of T3 and T4, the body has an elaborate feedback system.  

When there is a decrease in the hormones in the blood, the hypothalamus will release thyrotropin-releasing hormones.  These tell the pituitary gland to start releasing the thyroid-stimulating hormone TSH.  The thyroid gland will then start to produce and release T4 and T3.   

As the thyroid ... See more