This is a very accurate that Dr. Oz mentioned. One day while at my doctor's office for a checkup on my broken ankle, she looked at my eyes and said she wanted to run a blood test. I was like, what?? For my broken ankle?? She said "no", TSH 3rd Generation to test your thyroid. Sure enough, I was almost 2 full points off the charts on the high end, which means I have hypothyroidism (under active thyroid)! Geez, just one more thing I have to have checked regularly!! :(