Calcium/Phosphorous The ratio of these two substances in your blood is critical. The true value is seldom picked up on blood tests. To get the true value you should be tested on a diet free of milk and milk products, sugar, white flour, caffeine, no fruit or fruit juices, no peanuts or honey and after a 12 hour fast. This will give the true ratio. Ideally it should be 2 1/2:1 or for example calcium 10, phosphorous 4. In osteoporosis and periodontal disease the phosphorous is often high relative to calcium ie calcium 9.8, phosphorous 4.o. This situation will give you bone loss and sometimes it appears around your teeth before it is apparent elsewhere. We will discuss how to improve this ratio. Dr.Ray Forbes