Triiodothyronine (T3), Total LabCorp

This T3 test measures the level of thyroid hormone in your blood, which can help determine if your symptoms are related to an overactive thyroid (hyperthyroidism). Identifying the cause of your symptoms is important for getting the right treatment and feeling better. Defy Medical offers this test to help you understand the potential cause of your symptoms.

Finding the cause(s) of:

• Anxiety: High levels of T3 can overstimulate the nervous system, leading to feelings of anxiety.
• Fever: An overactive thyroid can increase metabolism and body temperature, potentially causing a fever.
• Heat intolerance: Excess T3 hormone speeds up metabolism, making you feel overly warm and intolerant to heat.
• Rapid heartbeat: High T3 levels can increase heart rate and cause palpitations.
• Tremors: An overactive thyroid can cause nerve stimulation, leading to shaky hands or tremors.
• Weight loss: Excess T3 boosts metabolism, which can cause unintended weight loss despite a normal or increased appetite.