What is considered a normal range for T3 levels?

The normal range for T3, or triiodothyronine, levels typically falls between 80 and 230 ng/dL in adults. This measurement reflects the amount of T3 hormone present in the bloodstream, which plays a crucial role in regulating metabolism, energy levels, and overall physiological functions.

In contrast to the other choices, which specify ranges outside of this accepted normal value, the range provided in the answer reflects the commonly acknowledged clinical standard for adult patients. Maintaining T3 levels within this range is significant for thyroid function and metabolic activity, and deviations can indicate various conditions such as hyperthyroidism or hypothyroidism. Monitoring T3 levels is essential in diagnosing and managing these thyroid disorders, thereby contributing to patient health and treatment efficacy.