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Dr. David
Dr. David, Board Certified MD
Category: Medical
Satisfied Customers: 45922
Experience:  Board Certified Physician
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Is there a connection between serum Urea levels and Serum TSH

Resolved Question:

Is there a connection between serum Urea levels and Serum TSH Levels and Serum Free T4 levels please?
I am a woman, almost 60 and have been taking thyroxine since I was almost 40.
TSH 0.10 mu/L
T4 17.5 pmol/L
Serum urea level 9.1 mmol/L

Submitted: 3 years ago.
Category: Medical
Expert:  Dr. David replied 3 years ago.
This is Dr. David

there is no real connection between blood urea levels and TSH levels

your TSH levels are too low and your T4 are too high which means you have hyperthyroidism.

your serum blood urea nitrogen levels of 9.1 is slightly higher than normal range of 2.5 – 8.0 mmol/L

this could mean you were a bit dehydrated when you had the blood test

are you seeing a endocrinologist about your thyroid hormone levels?
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