I need help with my lab results for FT3, FT4, and TSH.

[jovejove]

Good day!
I need help with my lab results for FT3, FT4, and TSH.

TEST                      RESULT           REFERENCE RANGE
FT3 (ECLIA)        6.19 pmol/L                      2.80~7.10
FT4 (ECLIA)        20.91 pmol/L                  12.00~22.00
TSH (ECLIA)       0.987 uIU/mL                  0.27~4.20

Thank you!

[Barb135]

Your FT3 and FT4 results are, both, quite high in the ranges, with your FT3 at 78% of the range and FT4 at 89% of its range.  Rule of thumb (where many/most of us feel best) is for FT4 to be about mid range and FT3 to be in the upper half to upper third of its range.  Are you currently taking any replacement thyroid medication?  If so, what medication, dosage and for how long have you taken it?

What prompted these tests?  What, if any, symptoms do you have?

[dominosarah]

Would this be an overactive thyroid?

[Barb135]

It could, unless the patient is taking replacement thyroid medication that's causing levels to be that high.  In that case, it could be considered over medication, but only if s/he has symptoms of hyperthyroidism.  If the person feels well and there are are no symptoms of hyperthyroidism, those levels may be normal for this person.

It all depends on what symptoms are present and what prompted the testing.

Depending on the answers, I receive above, if any, I would also ask if they've been tested for thyroid antibodies to determine if they have an autoimmune thyroid condition, which could cause thyroid hormone levels to be in the high normal range. Antibodies may be indicative of what's to come next.