A Kidney Biopsy is a precise procedure that removes a tiny piece of kidney tissue to figure out why your kidneys are not working properly or to check a specific mass.
Common Indications for Kidney Biopsy
Your doctor may request this procedure if you have:
- Unexplained high levels of protein or blood in your urine.
- Sudden or rapidly worsening kidney failure.
- A suspicious tumor or cyst seen on an ultrasound or CT scan.
What happens during the procedure?
You will usually lie face down on your stomach. Using an ultrasound or CT scan for real-time guidance, the doctor numbs your back. They then carefully guide a thin needle through your skin directly into the kidney. A spring-loaded device on the needle makes a clicking sound as it instantly snips a tiny core of tissue.
Do I need to prepare?
Yes. You will be asked to fast for a few hours and pause any blood-thinning medications. Your blood pressure will also be checked carefully, as high blood pressure can increase the risk of bleeding.
How long does it take?
The biopsy itself is very quick. However, you will need to rest flat on your back in the hospital for 4 to 6 hours while the nurses monitor you and check your urine for any bleeding.
Will it be painful?
The area is completely numbed, so you should only feel pressure. Your back may feel sore or achy for a few days, and you might notice your urine looking slightly pink for the first 24 to 48 hours, which is a normal part of the healing process.
Conclusion
A kidney biopsy is the most definitive way to understand what is happening inside your kidneys. The image guidance makes it safe and straightforward, giving your care team exactly what they need to help you.