Thyroid Tests
Thyroid Testing
Thyroid Tests and Panels
The following test panels are used to evaluate the overall health of your thyroid by determining related hormone levels. These lab tests can be used to diagnose common thyroid disorders like Hashimoto's thyroiditis, hyperthyroidism, and hypothyroidism.
Thyroid Panel
This blood test measures thyroid health to detect potential imbalances in thyroid hormone levels.
View DetailsThyroid Panel with TSH (Thyroid Stimulating Hormone) Popular Test
The combination of the Thyroid Profile (T3 uptake, T4, T7) and the TSH test evaluates thyroid function and/or symptoms of an overactive thyroid (hyperthyroidism) or an under active thyroid gland (hypothyroidism).
View DetailsFree T3 Test (FT3)
This test measures the more reliable form of triiodothyronine, Free T3, which are not affected by certain protein levels.
View DetailsFree T4 Test (FT4)
The free thyroxine (T4) blood test is used to help diagnose thyroid disorders or issues.
View DetailsReverse T3 Test
This test is used to help determine if an individual has "nonthyroidal illness syndrome" or "sick euthyroid syndrome" as opposed to hypothyroidism.
View DetailsTriiodothyronine (T3) Test
This test is used to evaluate free and bound T3 in order to help determine abnormal thyroid function.
View DetailsTotal T4 (Thyroxine) Test
The Total T4 Test measures both Free T4 (thyroxine that has not bonded to proteins in the blood) and T4 that is bonded to proteins in the blood (most T4 is bonded).
View DetailsThyroid Stimulating Immunoglobulin (TSI) Test
Thyroid stimulating immunoglobulins (TSI) mimic the action of TSH, which causes excess secretion of T4 and T3.
View DetailsTSH Test (Thyroid-Stimulating Hormone) Popular Test
Thyroid Peroxidase (TPO) Antibodies Test
The Thyroid Peroxidase (TPO) Antibodies test is used to help determine if an individual has hypothyroidism or thyroiditis.
View DetailsParathyroid Hormone (PTH) Test
This test is used to measure levels of PTH to help diagnosis parathyroid disease and other diseases that involve calcium homeostasis.
View DetailsIodine Urine Test, 24-Hour
This test is a comprehensive analysis that measures the amount of iodine excreted in the urine over a 24-hour period.
View DetailsAbout our Thyroid Tests
The thyroid is essential for all parts of your body to function properly. It’s a butterfly-shaped endocrine gland in your neck that is responsible for producing two major hormones: T3 (triiodothyronine) and T4 (thyroxine). These chemical substances control how you use energy (your metabolism), helping to regulate heart rate, body temperature, digestion, brain health, and more. Most T3 and T4 are bound to proteins in the blood, but a small portion aren’t bound and circulate as free hormones.
The amount of T3 and T4 that your thyroid gland secretes is regulated by your pituitary gland. It senses thyroid hormone levels in your blood and works to maintain stable amounts of T3 and T4.
- If T3 and T4 levels are low, the pituitary gland secretes TSH (thyroid-stimulating hormone) to make the thyroid produce more T4, and ultimately more T3.
- When thyroid hormone levels are normal, the pituitary gland stops secreting so that the thyroid makes less T4.
Monitor Your Thyroid Function
The thyroid gland can become underactive (hypothyroidism) or overactive (hyperthyroidism), causing health complications. Evaluating thyroid hormone levels can help diagnose thyroid disorders.
Hypothyroidism
Hypothyroidism means that the thyroid gland doesn’t make enough thyroid hormone.
Symptoms of hypothyroidism include:
- Tiredness
- Weight gain
- Weakness
- Muscle and joint aches
- Hair loss
- Depression
- Difficulty concentrating
- Sensitivity to cold
- Memory loss
- Constipation
- Heavy or irregular periods
Common causes include:
- Autoimmune disease such as Hashimoto’s thyroiditis
- Surgical removal of the thyroid
- Radiation therapy
- Certain medications
- Too little iodine
Hyperthyroidism
Hyperthyroidism means that the thyroid gland makes too much thyroid hormone.
Symptoms of hyperthyroidism include:
- Increased appetite
- Nervousness
- Difficulty sleeping
- Weakness
- Fatigue
- Weight loss
- Enlarged thyroid (goiter)
- Sensitivity to heat
- Dry hair
- Hair thinning or loss
- Changes in menstrual cycle, such as light or missed periods
- Infertility
Common causes include:
- Grave’s disease (the most common cause of hyperthyroidism)
- Hyperfunctioning thyroid nodules
- Thyroiditis, or inflammation of the thyroid
- Excess iodine
More Tests Worth Investing In
General Wellness Panels
These commonly ordered blood work and urine lab tests help measure overall health and wellness, and are routinely ordered by doctors for insight into an individual's general health.
Comprehensive Health Panel (CBC+CMP+UA+LP+Iron+TSH)
The Comprehensive Health Test Panel is combination of 6 tests that measure and evaluate the body as a whole. It is a full blood panel that is used to measure and evaluate the body as a whole.
View DetailsStandard Health Panel (CBC+CMP+UA+LP+TSH)
This health test panel includes thyroid testing, a CBC, CMP, Urinalysis, & Lipid Panel. These lab tests measure and evaluate the body as a whole and include cholesterol.
View DetailsBasic Health Panel (CMP+UA+LP)
The Basic Health Test Panel is combination of tests that measure and evaluate the body as a whole.
View Details
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