Code # 77714
Assess thyroid function with a blood test for Free T4 and TSH.
The thyroid gland is a small organ at the base of the neck that controls vital processes in the body. It regulates metabolism, energy levels, heart function, mood, and reproductive health. The Standa...Read more
Preparation: If you take certain B-vitamins (often found in supplements for hair, skin, and nails), please wait at least 72 hours after your last dose before having this test.
You can pay for your test online or directly at the laboratory before collection. Our doctors will review and approve your request - no extra visits required.
To provide your sample, visit the Genex laboratory. You can schedule your visit online in advance.
You will be able to view clear and easy-to-understand results online in your personal Genex Patient account. If any results require urgent attention, we will additionally contact you by phone or by email.
Thyroid-stimulating hormone (TSH), produced by the pituitary gland in the brain, signals the thyroid gland in your neck to start producing thyroid (T3 and T4) hormones. These hormones control how your body converts food into energy (i.e., your metabolism). When these thyroid hormones get out of balance, they may cause a variety of health problems ranging from irregular heartbeat to anxiety or depression.6
If you have concerns about your thyroid health, it’s important to know the early warning signs of thyroid problems. Symptoms of hypothyroidism (an underactive thyroid) may include4: FatigueSensitivity to coldDry skinWeight gainDepressionMuscle weakness, aches, tenderness or stiffnessIrregular menstrual cyclesConstipation Symptoms of hyperthyroidism (an overactive thyroid) may include5: Fast or irregular heartbeatMoist skinTremors in the hands or fingersIncrease in appetiteSweatingNervousness, anxiety or irritabilitySensitivity to heatWeight lossIncreased frequency of bowel movements Taking our Standard Thyroid Test can help you learn more about your body’s thyroid levels and whether you might have hypothyroidism or hyperthyroidism.
According to the American Thyroid Association, you should begin screening for thyroid dysfunction at age 35, and take follow-up tests every 5 years.7
You should take our Standard Thyroid Test if you have questions about your thyroid health or are experiencing early warning signs or symptoms of thyroid problems.
Low TSH and high T4 levels typically indicate an overactive thyroid (hyperthyroidism), suggesting that the thyroid gland is producing too much thyroid hormone. Common symptoms may include rapid heartbeat, weight loss, anxiety, and heat sensitivity. It’s important to consult with your healthcare provider for proper interpretation and potential follow-up testing or treatment.
High TSH levels often typically indicate an underactive thyroid (hypothyroidism). When the thyroid gland doesn't produce enough thyroid hormone, the pituitary gland responds by increasing TSH production to stimulate the thyroid. Common symptoms may include fatigue, weight gain, cold sensitivity, and depression. It’s important to consult with your healthcare provider for proper interpretation and potential follow-up testing or treatment.
Normal TSH levels vary by age. Consult with your healthcare provider if you have questions or concerns about your results.
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