I have to agree with gimel-while 'in range,' your Free T4 is low in in the range, while Free T3 is at a pretty good level. You may benefit from a small dose of levothyroxine.
In the words of a good thyroid doctor,""The free T3 is not as helpful in untreated persons as the free T4 because in the light of a rather low FT4 the body will convert more T4 to T3 to maintain thyroid effect as well as is possible. So the person with a rather low FT4 and high-in-range FT3 may still be hypothyroid. However, if the FT4 is below 1.3 and the FT3 is also rather low, say below 3.4 (range 2 to 4.4 at LabCorp) then its likely that hypothyroidism is the cause of a person's symptoms." Having a relatively low TSH along with low in the range FT4 and FT3 points to central hypothyroidism, which is a dysfunction in the hypothalamus/pituitary system that results in inadequate TSH to stimulate the thyroid gland.
If you look at your FT4 and FT3 you can see that your symptoms are most likely due to hypothyroidism. Even though they are within the so-called "normal" ranges does not mean they are adequate for you. Due to the erroneous assumptions used in establishing the ranges, they are far too broad to be adequate across their entire range. I mean just consider that for FT4 the upper range limit is 1.8, which is 125% higher than the lower range limit of .8. How can both be "normal"? Logically that makes no sense.
A good thyroid doctor will treat a hypothyroid patient clinically by testing and adjusting Free T4 and Free T3 as needed to relieve symptoms. Symptom relief should be all important, not just test results. Members say that they typically required FT4 at the middle of the range, and FT3 in the upper part of the range, adjusted as necessary to relieve symptoms. You can get some good info from this link written by a good thyroid doctor.
http://www.hormonerestoration.com/Thyroid.html
In addition, hypo patients are frequently too low in the range for Vitamin D, B12 and ferritin. D needs to be about 55, B12 in the upper end of its range, and ferritin should be about 70. If not tested already, you should do so and then supplement as needed to optimize to those levels.
The most important thing for you is to convince your doctor to treat you clinically as described above, or else find a good thyroid doctor that will do so.
tsh 0.4-4.50miu/L
t4 0.8-1.8 ng/dl
t3 2.3-4.2 pg/ml
thyroid peroxidase <9 IU/ml
tsh 0.4-4.50miu/L
t4 0.8-1.8 ng/dl
t3 2.3-4.2 pg/ml
thyroid peroxidase <9 IU/ml
First thing, please post the reference ranges for those results, as shown on the lab report.