“Can an X-ray determine my kidney function?”
I am a diabetes patient and lately, I am having trouble passing urine. I am starting to worry that my kidneys are being affected. Can an X-ray determine my kidney function level?
10 Answers
RadiologistKidneyhealth
It can, provided an iodinated dye is injected into the bloodstream. This dye gets concentrated & excreted via the kidneys after 2-30mins post injection which can be demonstrated by taking serial X-rays within that period of time.
NO. X rays aren't used to evaluate kidney function, Lab values (BUN, Creatinine and GFR) drawn with by a trained phlebotomist
at any reputable laboratory will best determine your kidney function.
at any reputable laboratory will best determine your kidney function.
A renal ultrasound would be the best way to assess whether your kidneys are obstructed or hydronephrotic. Such a study would also help to assess whether you have “medical renal disease”. It can also see renal cysts and stones as a possible source of abnormal renal function.
A simple blood test and urine test will suffice.
A blood test is the best and most simple way to assess renal function. Your primary doctor may have already performed a test for blood urea nitrogen (BUN) and creatinine. If that has not been done, it should be.

Robert Cruz
Radiologist
Hello,
Thanks for your question. No, it cannot.
Best regards!
Thanks for your question. No, it cannot.
Best regards!
No. This is best evaluated with a blood test to determine your creatinine and GFR. Imaging tests can determine vascular obstructions or drainage obstructions that may affect the renal function. Not passing urine could be due to a prostate problem in a male or a bladder issue in a male or female. Best to consult a urologist.