A Thyroid Test - with rT3 may include thyroid markers such as TSH, thyroid hormones, and reverse T3, depending on the panel. The thyroid gland helps regulate metabolism, energy use, and several essential body functions. TSH and free T4 are commonly used to evaluate thyroid function, while reverse T3 is a less routinely used marker whose clinical value depends on the circumstances. No single result should be interpreted without considering symptoms, medication use, and medical history. RxHomeTest provides convenient testing options that help individuals access selected thyroid assessments and discuss the findings with qualified healthcare professionals for appropriate interpretation and follow-up.