When you have kidney disease, your kidneys are no longer able to remove waste effectively from your body or to balance your fluids. The build up of wastes can change the chemistry of your body causing some symptoms that you can feel, and others that you don't.
Reference to a range of cells is typically of the form (A1:A6), which specifies all the cells in the range A1 through to A6. A formula such as =SUM(A1:A6) would add all the cells specified and put the result in the cell containing the formula itself.
For example, when you enter or select the cell reference A2, the formula uses the value of that cell to calculate the result. You can also reference a range of cells. For more information about cell references, see Create or change a cell reference. Click the cell in which you want to enter the formula. In the formula bar, type = (equal sign). Do one of the following, select the cell that contains the value you want or type its cell reference.