Taking Levothyroxine. Thyroid Test Results Are Normal. Any Suggestion?
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In hypothyroidism, free thyroxine will be low and TSH will be elevated.
Normal TSH level ranges between 0.4 to 4miU/L. Normal free T4 value is 0.7 to 1.86 ng/dL and free T3 level is 145 to 348pg/dL.
Your TSH level is 0.38 and your Doctor is right. The value may be considered as normal but on lower physiological limit.
In hypothyroidism, Levothyroxine is started at a dose of 50 mcg daily, and increased every 2 to 3 weeks up to a maximum of 100 to 200 mcg per day. The dose is fixed (individualized) depending upon the clinical response and serum TSH levels.
After consulting your treating Doctor, you can take Levothyroxine 125 mcg on all seven days a week instead of six days “if you feel the symptoms of hypothyroidism".
I hope this helps.
Regards.