Always Tired? Check Your Thyroid & Adrenal Health

Thyroid hormones often change over time. This basic thyroid blood test panel can provide a clear picture of thyroid hormone production, which can help guide thyroid hormone replacement therapy.

Our thyroid function lab test assesses all the basics, plus reverse T3, thyroglobulin antibody (ATA) and thyroid peroxidase antibody (TPO) to provide a detailed evaluation of the thyroid.

The blood test for thyroid stimulating hormone (TSH) is a screening test for suboptimal thyroid function. A higher than normal TSH level may suggest the need for thyroid hormone replacement.

The Thyroid Panel with Reverse T3 Blood Test will help you determine whether you have any of the three “usual suspects” of an abnormal thyroid function: not enough production of T4, reduced conversion of T4 to T3, or greater production of inhibitory reverse T3.

This test measures blood levels of cortisol, a hormone released by the adrenal glands during stress. A high cortisol level may indicate chronic stress.

We think of stress as a concept—but it is in fact a measurable biological phenomenon. This saliva test measures levels of DHEA, the antibody secretory IgA and cortisol at 4 different times of the day to assess your body’s stress response.

This panel assesses proteins involved in the production of thyroid hormones. It is possible for antibodies from your own immune system to attack these proteins, rendering them dysfunctional and resulting in fatigue, weight gain, constipation and other symptoms of low thyroid.

Triiodothyronine (T3) is a major thyroid hormone. This test measures the amount of T3 available to the tissues, or free T3. Many doctors believe that evaluating the levels of free T3 is the best way to assess your thyroid function.

Testing for blood levels of reverse T3, a nonfunctioning form of T3, can be informative for people experiencing symptoms of hypothyroidism, which can be associated with high reverse T3 levels.

If you or your health practitioner is concerned that you may have developed a low thyroid condition, this test will detect antibodies to thyroid peroxidase (TPO) levels, which are markers of autoimmune thyroid disease.

Providing a more complete picture of thyroid function, this blood test measures the thyroid hormones T3 and T4. The panel is a popular addition to other tests that assess thyroid stimulating hormone (TSH).

This test is used to assess your thyroid hormone production. When T4 is released from the proteins that bind and carry it in the blood, it is free to convert to the more active thyroid hormone T3. Some health care providers prefer this test to the standard T4 blood test.

This test measures total thyroid hormone production by assessing your level of the thyroid hormone thyroxine (T4). High T4 levels occur in hyperthyroidism, while hypothyroidism is characterized by low T4.

If you have symptoms of hypothyroidism, your health practitioner may want to check for antibodies to thyroglobulin, a protein used in the production of thyroid hormones.

This test evaluates levels of triiodothyronine (T3), a major thyroid hormone, to assess your thyroid function.

Adrenocorticotropic hormone (ACTH) is produced by the pituitary gland, which controls the production of cortisol. This blood analysis of ACTH aids in the evaluation of the pituitary gland and disorders characterized by abnormal cortisol levels.

Cortisol levels fluctuate from day to night. This test measures morning and late afternoon cortisol values to provide a better assessment of cortisol than just one measurement.

This test is the most accurate way to assess cortisol levels, because it measures the amount of this hormone during a 24-hour period.

This test helps health care providers assess for adrenal tumors and specific metabolic conditions by testing levels of the hormone aldosterone.

A test that can be used to screen for thyroid disorders, the T3 Uptake test assesses available binding sites on thyroxine binding globulin, the protein that transports thyroid hormone. This test is often ordered in combination with the Thyroxine (T4) blood test (Item # LC001149).

If you’ve been undergoing thyroid hormone therapy or are investigating a thyroid disorder, this test will assess your levels of thyroxine-binding globulin, which carries thyroid hormones T3 and T4 in the blood. This test also may be useful in assessing pituitary function.

Find out whether you're in shape for a good night's sleep by testing your melatonin and cortisol levels. Melatonin helps regulate the body's internal clock and is needed for deep sleep, but high evening cortisol levels inhibit melatonin production.

Take a deep dive into your stress profile. This test assesses stress hormones (cortisol AM/PM, DHEA sulfate), thyroid function (free T3), metabolism markers (glucose, insulin, lipid panel) and also includes a test for the sex hormone progesterone.

The adrenal glands make catecholamines as a reaction to stress, which helps the body respond. This panel measures blood levels of the main catecholamines: epinephrine (adrenaline), norepinephrine (noradrenaline) and dopamine.