Bone Mets???

Elevated blood calcium level can be caused by many, many things--takiing a calcium supplement regularly, temporary changes in hydration (usually dehydration), taking other supplements like magnesium or potassium, or even eating a meal a lot higher in salt than usual (like a restaraunt meal).  If the level was just barely elevated it very likely means absolutely nothing.  Rmember, normal levels are determined by looking at a lot of test results and figuring out statistically what 2 numbers 90% of the results fall into. 10% of all people have a normal-for-them level that is either higher or lower than the "normal range."  Also, those tests were all taken on ill people, not healthy people, and that may skew the results.  Any reading that's close to the normal is usually considered normal unless there is a trend or a symptom to trigger worry.  If you have a clean bone scan, haven't started haveing constant bone pain somewhere, are taking  a calcium supplement, and had not drank a solid 16 ounces of water before the lab draw I'll bet the repeat will be within the normal range. 

My was barely elevated.  My onc had my parathyroid checked.  It was normal.  Then when I went back for more blood work the calcium level was also normal.  So, do not worry!