The contrast dye administered during the CT scan can discolor the urine, so the patient is instructed to increase fluid intake to flush the medication from the system. The patient does not need to report the discolored urine to the provider. The patient should be instructed to call out of the lips begin to feel tingly or swollen, as this can indicate an allergic reaction. It is normal to experience a metallic taste or flushing during the administration of the contrast dye.