If we are injecting CT contrast during your procedure, we may first do a creatinine blood test for kidney function. Creatinine is a waste product that when found in high levels can signal impaired kidneys, and since contrast can stress impaired kidneys, we want to make sure your procedure will be safe. Please allow an additional 30 – 45 minutes for lab results, for a total visit time of a little over an hour.

We perform this blood test if:

• You are over age 60. (We can use creatinine lab work that is less than one month old.)
• You are diabetic.
• You are in renal failure.