Hyperparathyroid?

[Inara]

I am a 35 year old female in general good health with polycystic ovarian syndrome managed by the Pill, diet and exercise. A kidney stone I recently passed was found to be of the calcium phosphate variety, leading the doctor to perform a PTH test that came back high (69, lab range 13-54) but my blood calcium and phosphate were both normal (2.35 and 0.95 respectively); neither have ever been elevated in prior blood tests and my urine calcium is also normal. Would this still likely be a hyperparathyroid or could the elevated PTH have something to do with my PCOS? Thanks.

[Inara]

The dr. said he didn't see any reason to repeat the PTH and calcium tests so soon; I can go next month.

My 25-OH-D is low: 60.8 (normals 80-200) but dr. said it didn't have anything to do with the PTH. He didn't say anything about taking any Vitamin D supplements; I had been taking 1000IU/day but stopped after the recent kidney stone event thinking they may have been responsible.

He's put in a referral to an endocrinologist but app't would be in 2-3 months at least (I'm in Canada, wait times are long). Anything that might help in the meantime?

[Mark Lupo, M.D.]

Would consider repeating the PTH and Calcium as well as checking 25-OH-D (vitamin D) -- as the recurrent stones are suspicious for a parathryoid problem.

[Inara]

I just wanted to add that lab normals for calcium are 2.1-2.55 and for phosphate 0.8-1.5. I also had other incidents of kidney stones in 1997 and 2000, blood calcium levels were normal but they didn't pursue composition thus didn't test for PTH.