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What Does This Thyroid Test Report Indicate?
Posted on
Tue, 7 Mar 2017
Medically reviewed by
Ask A Doctor - 24x7 Medical Review Team
Tue, 7 Mar 2017
Answered on
Thu, 30 Mar 2017
Last reviewed on
Brief Answer:
Information
Detailed Answer:
Hello XXXXXXX
Depending on the units that are used to measure these tests, the normal ranges for Free T4 are 0.8-2.8 ng/dL
TSH are 0.3 - 5.0 uIU
If your lab values were reported using these units, then I can compare.
Your TSH, if measured in uIU is low.
Your T4 is high.
This means the dose of thyroxine you are taking is probably too much for you. When an excess amount of thyroxine is taken, then T4 (which is a measure of thyroxine level) is high. And when the thyroxine level is too high, the pituitary decreases it's production of Thyroid Stimulating Hormone (TSH) because it thinks the thyroid gland is making enough or too much.
I recommend that your follow up with your doctor who will likely decrease the dose of thyroxine you are taking, and then recheck in 3 months. Unless there is a reason your doctor wants you to be in a hyperthyroid state for a particular reason and has discussed this with you, this would be the usual course of action.
I hope this information helps. Please let me know if I can provide further information.
Information
Detailed Answer:
Hello XXXXXXX
Depending on the units that are used to measure these tests, the normal ranges for Free T4 are 0.8-2.8 ng/dL
TSH are 0.3 - 5.0 uIU
If your lab values were reported using these units, then I can compare.
Your TSH, if measured in uIU is low.
Your T4 is high.
This means the dose of thyroxine you are taking is probably too much for you. When an excess amount of thyroxine is taken, then T4 (which is a measure of thyroxine level) is high. And when the thyroxine level is too high, the pituitary decreases it's production of Thyroid Stimulating Hormone (TSH) because it thinks the thyroid gland is making enough or too much.
I recommend that your follow up with your doctor who will likely decrease the dose of thyroxine you are taking, and then recheck in 3 months. Unless there is a reason your doctor wants you to be in a hyperthyroid state for a particular reason and has discussed this with you, this would be the usual course of action.
I hope this information helps. Please let me know if I can provide further information.
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar
Answered by
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