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A 29-year-old female asked:

What was meant for low in t3 (liothyronine)?

2 doctor answers2 doctors weighed in
Dr. Michael Dugan
Specializes in Hematology
T3 (liothyronine) is one: Of the thyroid hormones. It cannot be interpreted in a vacuum. Need to know free level, T4 and tsh.
Dr. David Sneid
Endocrinology 42 years experience
Possibly nothing: If your other thyroid tests are normal, the low T3 (liothyronine) is probably irrelevant. T3 (liothyronine) levels in the cell are what's important, not in the blood stream -- except for highly elevated T3 (liothyronine) which can indicate an overactive thyroid.

Similar questions

Mt Sinai, NY
A 28-year-old male asked:

What are the symptoms of low t3 (liothyronine) levels?

1 doctor answer2 doctors weighed in
Dr. Darrell Herrington
Family Medicine 35 years experience
Maybe none: T3 (liothyronine) & T4 are the active thyroid hormones. But low T3 (liothyronine) by itself may be normal, unless either T4 is low or TSH is elevated, then total thyroid production is likely low. See your doctor for full evaluation and treatment.
Last updated Apr 8, 2015
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