My Father Had Some Blood Tests Taken For Pre-operation. The

My father had some blood tests taken for pre-operation. The doctors have found the white blood cell count was up to 30,000, so they would not operate. so far, the doctors do not know what sort of infection he may have, and of course they are not saying any sort of disease I don't know all the tests which were done, just that these were the results of the blood tests. To me, just a daughter, it seems pretty high and we, the family should be worried. No????