Do you have all the symptoms of a thyroid problem yet your blood test came back negative? Endocrinologist Kenneth Blanchard, M.D. Massachusetts says –
“The key thing is … doctors are always told that TSH is the test that gives us a yes or no answer. And, in fact, I think that’s fundamentally wrong. The pituitary TSH is controlled not just by how much T4 and T3 is in circulation, but T4 is getting converted to T3 at the pituitary level. Excess T3 generated at the pituitary level can falsely suppress TSH.”
Hence, many people who are simply tested for TSH levels and are found to be within “normal” range are, in fact, suffering from thyroid problems that are going undetected.