Dr. Thomas Panel #1 Blood Test

The following is a list of what is included in the item above. Click the test(s) below to view what biomarkers are measured along with an explanation of what the biomarker is measuring.

Also known as: Reverse T3, Reverse Triiodothyronine, RT3, T3 Reverse RT3 LCMSMS, Triiodothyronine Reverse

T3 Reverse, LC/MS/MS

Reverse T3 produced in the thyroid comes from the conversion of the storage hormone T4. Your body, especially the liver, can constantly be converting T4 to RT3 as a way to get rid of any unneeded T4. In any given day approx. 40% of T4 goes to T3 and 20% of T4 goes to Reverse T3. However in any situation where your body needs to conserve energy and focus on something else, it will change the above percentages, changing the conversion of RT3 to 50% or more, and the T3 goes down, down. Examples are emotional, physical, or biological stress, such as being chronically or acutely sick (the flu, pneumonia, etc), after surgery, after a car accident or any acute injury, chronic stress causing high cortisol, being exposed to an extremely cold environment, diabetes, aging, or even being on drugs like beta blockers and amiodarone.

Also known as: Triiodothyronine

T3, Total

Triiodothyronine (T3) is a thyroid hormone. It plays an important role in the body's control of metabolism.

Also known as: Free T3, FT3, T3 Free

T3, Free

This test measures the amount of triiodothyronine, or T3, in the blood.

Also known as: Free T4, FT4, T4 Free

T4, Free

The free T4 test is not affected by protein levels. Since free T4 is the active form of thyroxine, the free T4 test is may be a more accurate reflection of thyroid hormone function.

Also known as: Thyroid Stimulating Hormone, Thyroid Stimulating Hormone (TSH), Thyrotropin

TSH

A TSH test is a lab test that measures the amount of thyroid stimulating hormone (TSH) in your blood. TSH is produced by the pituitary gland. It tells the thyroid gland to make and release thyroid hormones into the blood.

TSH

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The Dr. Thomas Panel #1 Blood Test panel contains 5 tests with 6 biomarkers .

Dr. Thomas Panel #1 Blood Test

The Dr. Thomas Panel #1 Blood Test is a comprehensive assessment designed to evaluate thyroid function by measuring key thyroid hormones and their regulatory mechanisms. The thyroid gland plays a crucial role in metabolism, energy production, and overall hormonal balance. Dysregulation of thyroid function can lead to a wide range of symptoms, including fatigue, weight changes, temperature sensitivity, mood disturbances, and cardiovascular issues. This panel provides essential insights into thyroid hormone production, conversion, and regulation, allowing healthcare providers to diagnose thyroid disorders, assess treatment effectiveness, and monitor metabolic health.

When and Why the Dr. Thomas Panel #1 Blood Test May Be Ordered

The Dr. Thomas Panel #1 Blood Test is typically ordered when a patient presents with symptoms suggestive of thyroid dysfunction, such as persistent fatigue, unexplained weight fluctuations, dry skin, brittle hair, depression, anxiety, or irregular heart rate. It is also commonly used for individuals with a family history of thyroid disease, those experiencing difficulty managing body temperature, or patients with suspected autoimmune thyroid conditions. Additionally, healthcare providers may order this test to monitor individuals receiving thyroid hormone replacement therapy or other treatments aimed at restoring thyroid balance. This panel is useful in differentiating between various thyroid disorders, such as hypothyroidism, hyperthyroidism, and non-thyroidal illness syndrome.

What the Dr. Thomas Panel #1 Blood Test Checks For

This panel evaluates several critical biomarkers to provide a thorough assessment of thyroid function. Each test plays a key role in understanding how the thyroid gland is producing and regulating hormones essential for metabolic health.

Thyroid Hormone Levels and Conversion

Thyroid hormones are responsible for maintaining metabolism, energy balance, and various physiological functions. This panel measures total T3, free T3, and free T4 levels to assess the thyroid's ability to produce and regulate these hormones efficiently. These markers help determine whether the body is producing sufficient active thyroid hormones and whether the conversion of inactive forms into active forms is functioning properly.

Thyroid-Stimulating Hormone (TSH)

TSH is a hormone secreted by the pituitary gland that signals the thyroid to produce thyroid hormones. Abnormal TSH levels can indicate thyroid dysfunction and help differentiate between primary thyroid disorders and secondary causes related to pituitary gland dysfunction.

Reverse T3 and Thyroid Metabolism

Reverse T3 (rT3) is an inactive form of T3 that serves as a regulatory mechanism for thyroid function. Elevated rT3 levels can indicate issues such as chronic stress, systemic illness, or impaired thyroid hormone conversion. This marker helps determine whether thyroid dysfunction is due to metabolic imbalances rather than primary thyroid disease.

Conditions and Diseases the Dr. Thomas Panel #1 Blood Test Can Detect

This panel is instrumental in diagnosing various thyroid-related conditions that impact overall health and well-being. Early detection of these disorders allows for targeted treatment and improved patient outcomes.

Hypothyroidism

Hypothyroidism occurs when the thyroid gland does not produce enough thyroid hormones, leading to symptoms such as fatigue, weight gain, dry skin, depression, and sensitivity to cold. This panel detects hypothyroidism by measuring low free T3 and free T4 levels, often accompanied by elevated TSH. Identifying hypothyroidism early allows for prompt treatment with thyroid hormone replacement therapy.

Hyperthyroidism

Hyperthyroidism is a condition characterized by excessive thyroid hormone production, resulting in symptoms such as unexplained weight loss, rapid heartbeat, anxiety, heat intolerance, and tremors. The Dr. Thomas Panel #1 Blood Test helps diagnose hyperthyroidism by identifying elevated free T3 and free T4 levels alongside suppressed TSH levels. Early detection is crucial for managing hyperthyroidism and preventing complications such as heart disease and osteoporosis.

Euthyroid Sick Syndrome (Non-Thyroidal Illness Syndrome)

Euthyroid sick syndrome occurs when thyroid hormone levels become imbalanced due to a systemic illness rather than primary thyroid dysfunction. This condition is characterized by elevated reverse T3 levels, often in conjunction with normal or low free T3 levels. This panel helps differentiate euthyroid sick syndrome from actual thyroid disease, ensuring that treatment targets the underlying systemic condition rather than the thyroid itself.

Thyroid Hormone Conversion Issues

Some individuals have difficulty converting T4 into the active T3 hormone, leading to symptoms of hypothyroidism despite normal T4 levels. By measuring both free T4 and free T3 levels, this panel helps determine whether poor conversion is contributing to symptoms and whether treatment adjustments, such as T3 supplementation, are necessary.

How Healthcare Professionals Use the Dr. Thomas Panel #1 Blood Test in Treatment and Monitoring

Healthcare providers use the results of this test to develop targeted treatment plans for individuals with thyroid dysfunction. Monitoring thyroid hormone levels allows for precise adjustments to therapy and ensures optimal metabolic function.

Managing Hypothyroidism

If hypothyroidism is diagnosed, healthcare providers typically prescribe thyroid hormone replacement therapy, such as levothyroxine (T4) or a combination of T4 and T3 therapy. Regular monitoring of free T3, free T4, and TSH ensures that the treatment is effective and that symptoms are well-controlled.

Treating Hyperthyroidism

For individuals diagnosed with hyperthyroidism, treatment options may include antithyroid medications, radioactive iodine therapy, or thyroid surgery. Ongoing monitoring of thyroid hormone levels helps determine the effectiveness of treatment and prevent long-term complications.

Addressing Euthyroid Sick Syndrome

If euthyroid sick syndrome is detected, healthcare providers focus on treating the underlying illness or stressor rather than directly modifying thyroid hormone levels. Regular monitoring of reverse T3 levels helps assess recovery and metabolic stabilization.

Optimizing Thyroid Hormone Conversion

For patients experiencing symptoms of hypothyroidism despite normal T4 levels, healthcare providers may consider T3 supplementation or nutritional interventions to support thyroid hormone conversion. Monitoring free T3 and free T4 levels ensures that treatment adjustments lead to symptom relief and metabolic balance.

Conclusion

The Dr. Thomas Panel #1 Blood Test is a valuable diagnostic tool for assessing thyroid function, hormone regulation, and metabolic health. By measuring key biomarkers such as free T3, free T4, reverse T3, and TSH, this panel helps identify conditions such as hypothyroidism, hyperthyroidism, euthyroid sick syndrome, and thyroid hormone conversion issues. Healthcare providers use the results of this test to develop personalized treatment plans, optimize hormone balance, and improve overall well-being. Regular monitoring and early intervention can significantly enhance quality of life for individuals with thyroid dysfunction.

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