A member asked:

Normal range tsh and free t3 but low t4?? just had my thyroid labs done - tsh - 1.88, free t3 - 3.3 and free t4 is .87. what would cause this? i dont sleep great with my 2yo waking up every night but why is t4 low? is t3 high?is this a bad balance?

3 doctors weighed in across 2 answers
Dr. Yvette Kratzberg answered

Specializes in Pediatrics

The Dr who ordered these tests knows your entire history and any current symptoms. They are the best resource for reading these labs in the correct context of your full medical history/exam/other labs. It would not be appropriate for a Dr online to try and determine a diagnosis based on two lines of information.

Answered 7/20/2022

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All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Talk to the doctor who ordered the tests. Having said that, with a TSH level in the middle of the normal range, other values are not a cause for concern. Wish you good health!

Answered 7/19/2022

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