I have very strong back pain and my urine flow is very low and I have frequent urination some months ago I was visited to a urologist and he said to do usg my usg report shows that 3 ml urine was not clear after urination means my bladder was not clear after urination .and then he told to do r.g.u, m.c.u x -ray .i want to know what is the cost of r.g.u and m.c.u.