What is a Normal TSH?
By Mary Shomon, About.com Guide
Updated March 04, 2011
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
The TSH -- Thyroid Stimulating Hormone -- blood test is considered by some physicians to be the only test needed to diagnose and manage an underactive or overactive thyroid -- also known as hypothyroidism or hyperthyroidism.