Hmm, Mere, get it retested. Glenn is right. If it runs high consistently, you need to be evaluated for diseases that cause that....now and then you get a 'laboma' (lab error) if your blood was not processed properly.
I run a LOW Calcium....(and K+, and bicarb).
I know....when it is me....I have already read about 200 mortal diseases.....hang in there.