People with one kidney are able to have enhanced CT with normal kidney function. Kidneys have strong compensatory ability, even if there is only one kidney, if the function is good, the impact on health is not great. Enhanced CT examination requires injection of contrast agent, in the case of poor renal function, the metabolism of contrast agent is slower, once the contrast agent can not be discharged from the body in time, it is easy to cause contrast nephropathy. Therefore, people with only one kidney are recommended to do enhanced CT in the state of normal renal function. It can be seen that whether a person with one kidney can do enhanced CT mainly depends on whether the renal function is normal. As long as the renal function is normal, you should actively cooperate with the examining physician to do the enhanced CT. in case of renal insufficiency or abnormal renal function, it is recommended not to do the enhanced CT, so as not to cause unnecessary damage to the kidney. At the same time, under the guidance of professional nephrologist, take drugs to protect kidney function.