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Kidney Biopsy

(757) 668-7000

A kidney biopsy is a procedure in which the doctor removes a tiny piece of the kidney to be examined in the lab to diagnose various types of kidney problems. The procedure takes about an hour. The results take 24-48 hours to come back. For children, this procedure can be done under procedural sedation. Most children go home the same day and some stay in the hospital.

Aspirin and ibuprofen are avoided before and after the procedure because these medicines may increase the risk of bleeding.

  • Do not give your child aspirin 7 days before or after the procedure.
  • Do not give your child ibuprofen 48 hours before or after the procedure.

What to expect after the procedure: 

  • Your child will be brought to the Short Procedure recovery area. Visitors are allowed in this unit, but only two may visit at a time.
  • There will be a Band-Aid or small gauze dressing on your child’s back.
  • There may be a small amount of bloody drainage.
  • Your child may feel a bit sore in the area of the biopsy.
  • If your child is going home the same day, he/she will be in the Short Procedure unit for about six hours. If your child experiences blood in the urine, he/she may have to stay overnight for observation until the bloody urine clears.
  • Blood will be drawn for lab tests 4-6 hours after the procedure.
  • Your child must have quiet activities for the first day. You may want to bring quiet activities for your child’s stay in the Short Procedure unit.
  • A lunch tray will be provided for your child if he/she remains in the Short Procedure unit for six hours. 

Call Your Child’s Doctor If: 

  • There is bleeding at the site or continuous oozing.
  • There is increasing unexplained pain in the area.
  • There is a lot of swelling around the site.
  • The wound is hot to the touch or has a lump you can feel.
  • Your child has blood in his/her urine.
  • Your child’s temperature is greater than 101.5 degrees rectally or by mouth. You should take your child’s temperature at least once before bedtime tonight.
  • Your child has vomiting that lasts more than six hours or the vomiting is severe.
  • There are signs of dehydration. Your child can become dehydrated when he/she has prolonged or severe vomiting and is unable to drink enough fluid to keep up with the loss. 

Signs of Dehydration:

  • Dry Mouth.
  • Sunken look around eyes.
  • No tears when crying.
  • Decreased amount of urine, which means fewer wet diapers than usual in an infant or toddler.

Special Instructions:

  • Bring loose fitting clothes for your child to wear home.
  • Keep the biopsy site clean and dry for at least 48 hours. The Band-Aid can come off after 24 hours.
  • Your child should have indoor activities and no rough play for 7-10 days.


  • Please call 668-7244 if you have ANY questions or concerns. If it is after hours the answering service will connect you to the on call physician.

Disclaimer: This information is not intended to substitute or replace the professional medical advice you receive from your child's physician. The content provided on this page is for informational purposes only, and was not designed to diagnose or treat a health problem or disease. Please consult your child's physician with any questions or concerns you may have regarding a medical condition.

Reviewed: 06/2010

(757) 668-7000