I am age 50, and have a 12 year history of Borderline high serum
calcium levels usually around 10-10.2(range 8.6-10.3), and on a few occasions several years ago a 10.3. My pcp has never commented it as abnormal. However, on my most recent labs, the calcium level came in at 10.4, and she finally commented. A repeat labs done 13 days later revealed a calcium level of 11.1 with a pth intact of 18(range 16-77), and then a referal to endo.