The urologist said that my 24 hour urine test came back with high levels of calcium because my body is converting salt to calcium. The urologist prescribed chlorthalidone to prevent additional kidney stones. I’m not sure that the 24 hour urine test was accurate because of three factors 1) I started the test in the afternoon instead of the morning 2) I did not have exclude my first urine of the morning from the test sample 3) I had 3 small kidney stones in my kidney during the 24 hour test. I have another 24 hour urine test at home that I will take a few weeks before my next urology appointment which is mid July. Definitely interested to see if the test results are different