Enhanced CT can be done after renal surgery with creatinine of 135 μmol/l, but it is still important to note that enhanced CT has the potential to cause damage to renal function and further increase in creatinine. Enhanced CT is the application of instruments to scan certain organs, but it requires intravenous contrast. A blood creatinine value of 135 μmol/l usually indicates impaired renal function. If enhanced CT is continued, the contrast agent may cause damage to the glomeruli and tubules during metabolism. Absorption of the contrast medium into the renal tubules may lead to acute necrosis of the tubular epithelial cells. However, if the disease requires enhanced CT, creatinine 135 μmol/l can also be performed after evaluation of the pros and cons. If the patient needs to undergo enhanced CT examination, it is recommended to go to a regular hospital in time, and the doctor will decide whether or not to perform the relevant examination according to the needs of the patient’s condition.