I am a 31 yr old female. I have high blood pressure, I am on Atenolol. It has come down, but still runs 140's/90's (it started at 170/110). My doctor upped the dose to 75mg. I am also lightheaded and had a positive tilt table test. I am run down and tired. They ran all sorts of blood tests--my PTH measured 83.1, then more recently, 95.3. My Calcium measured 10.3, then 10.1. My doctor said its nothing, your Calcium has to be 12 or 13 for it to be considered hyperparathyroidism. He thinks I have a Vitamin D deficiency, and is checking me for that. Is this right?