A member asked:

What is the normal level of thyroid-stimulating hormone (tsh) in the blood of a 40 year old male?

5 doctors weighed in across 2 answers
Dr. Ralph Morgan Lewis answered

Specializes in Family Medicine

Some controversy: Most labs use the reference range of 0.5 - 4.70 or 5.0 miu/l for "normal". However, the american association of clinical endocrinologists (hormone specialists) recommend a narrower range: 0.3 - 3.0 your doc can advise you which reference range s/he follows.

Answered 2/27/2015

5.7k views

Thank
Dr. Samuel Freedman answered

Specializes in Pediatrics

TSH: It depends on lab normals. For most commercial labs it is less than 4.50 miu/ ml.

Answered 7/22/2012

5.7k views

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