Always Tired? Check Your Thyroid & Adrenal Health

Are you suffering from fatigue?

Your adrenal gland is tied to how your body deals with stress. Blood tests for adrenal function measure cortisol levels and other hormones to determine whether your adrenal gland is healthy. Similarly, thyroid hormones like T4 can tell you if you have hyperthyroidism and other disorders. Test for healthy thyroid and adrenal function today. Traditional blood testing and saliva testing available.

What do thyroid and adrenal tests look for?

  • Thyroid hormones like TSH, T4, Free T3 and Free T4
  • Stress-related hormones such as DHEA and cortisol
  • Circulating levels of biomarkers of chronic fatigue
  • Markers of thyroid disease and other disorders

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Thyroid & Adrenal Health Lab Tests

Our comprehensive thyroid hormone test panels will let you know how much total and free thyroid hormones you have in your system. The adrenal stress tests use saliva to determine how your body is reacting to stress. Take a test today—and find out whether you’re suffering from thyroid or adrenal gland deficiency.

Thyroid Panel (TSH, T4, Free T4, Free T3) Blood Test - Life Extension

A thyroid lab test that evaluates hormone levels

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  • $75.00
  • $56.25
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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.

Comprehensive Thyroid Panel Blood Test - Life Extension

Thorough thyroid function lab test

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  • $199.00
  • $149.25
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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.

Thyroid Stimulating Hormone Blood Test - Life Extension
  • $31.00
  • $23.25
  • Save $7.75

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.

Thyroid Panel with Reverse T3 Blood Test - Life Extension
  • $120.00
  • $90.00
  • Save $30.00

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.

Cortisol Blood Test - Life Extension

Tests for chronic stress impact

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  • $39.00
  • $29.25
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This test measures blood levels of cortisol, a hormone released by the adrenal glands during stress. A high cortisol level may indicate chronic stress.

Thyroid Antibody Panel Blood Test - Life Extension

Measures thyroid protein antibodies associated with autoimmunity

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  • $99.00
  • $74.25
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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.

Adrenal Stress Profile Saliva Test - Life Extension

Measures the adrenal glands’ response to stress

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  • $159.00
  • $119.25
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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.

Tri-iodothyronine (T3) Free Blood Test - Life Extension
  • $31.00
  • $23.25
  • Save $7.75

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.

Reverse T3 Blood Test - Life Extension

Tests for reverse T3, a nonfunctioning form of the active hormone T3.

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  • $55.00
  • $41.25
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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.

Thyroid Peroxidase Antibody Blood Test - Life Extension

Measures thyroid peroxidase antibody to assess thyroid function

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  • $49.00
  • $36.75
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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.

Thyroxine Free, Direct (T4) Blood Test - Life Extension

Measures free thyroxine (T4), released from the proteins that carry it

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  • $28.00
  • $21.00
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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.

Thyroid Add-On Panel Blood Test - Life Extension

Tests the blood for thyroid hormones T3 and T4.

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  • $55.00
  • $41.25
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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).

Thyroxine (T4) Blood Test - Life Extension

Measures thyroxine (T4), a hormone produced by the thyroid gland

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  • $28.98
  • $21.74
  • Save $7.24

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.

Tri-iodothyronine (T3) Blood Test - Life Extension

Measures triiodothyronine (T3), the active form of thyroid hormone

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  • $36.23
  • $27.17
  • Save $9.06

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

Adrenocorticotropic Hormone (ACTH) Blood Test - Life Extension

Adrenocorticotropic Hormone (ACTH) is a test for pituitary function

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  • $91.50
  • $68.63
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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.

Thyroglobulin Antibody Blood Test - Life Extension

Thyroglobulin antibody blood test helps assess thyroid function

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  • $66.00
  • $49.50
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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.

Can’t sleep? Measure your melatonin and cortisol levels

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  • $159.00
  • $119.25
  • Save $39.75

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.

Aldosterone Blood Test - Life Extension

Measures blood levels of aldosterone, an adrenal gland hormone

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  • $111.70
  • $83.77
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This test helps health care providers assess for adrenal tumors and specific metabolic conditions by testing levels of the hormone aldosterone.

Cortisol, 24 Hour Urine Test - Life Extension

Test assesses 24-hour output of the major adrenal hormone, cortisol

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  • $59.00
  • $44.25
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This test is the most accurate way to assess cortisol levels, because it measures the amount of this hormone during a 24-hour period.

Cortisol AM/PM Blood Test - Life Extension
  • $72.00
  • $54.00
  • Save $18.00

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.

T3 Uptake Blood Test - Life Extension

Measurement of T3 uptake value helps assess thyroid function

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  • $26.45
  • $19.84
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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).

Catecholamines, Fractionated, plasma Blood Test - Life Extension

Measures the catecholamines epinephrine, norepinephrine, dopamine

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  • $249.00
  • $186.75
  • Save $62.25

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.

Stress Management Profile Blood Test - Life Extension

Evaluates blood factors that may be altered during stress

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  • $125.00
  • $93.75
  • Save $31.25

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.

Thyroxine-binding Globulin (TBG), serum Blood Test - Life Extension

Measures thyroxine-binding globulin (TBG), which carries T4 and T3

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  • $146.25
  • $109.69
  • Save $36.56

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.

Essentials Quiz

Answer a few questions to choose the right supplements

Life Extension Lab Testing

It's never been more important to unlock the truth about your health—whether that's a comprehensive view of your vitamin D levels, CBC, and hormone balance--or taking a deep dive and looking for signs of cancer, Alzheimer's, and other diseases.

Lab testing is a breeze!

  1. Order online or call 1-800-544-4440.
  2. Follow instructions for easy at home tests, or take your form for bloodwork to a local lab.
  3. Go over your results for FREE with our Wellness Specialists. You can then review with your doctor.

Let's get started—the key to lasting health is in your hands!