Kidney biopsy

The kidney biopsy is a standardised procedure and usually takes around 20 to 30 minutes. At Zollikerberg Hospital, the examination is carried out on an interdisciplinary basis by the nephrology and radiology departments.

• Informed consent discussion at least 24 hours before the procedure, including written consent
• Checking blood values, especially coagulation
• Temporary cessation of blood-thinning medication if necessary
• Fasting before the procedure
• Usually performed on an outpatient basis with admission to the day clinic in the morning

• Positioning in prone position (supine for transplanted kidney)
• Disinfection of the skin and local anaesthetic
• Ultrasound-guided localisation of the kidney
• Removal of usually two to three tissue samples using a biopsy needle with a short breath-holding phase

• Ultrasound check to rule out bleeding
• Bed rest in supine position for about four hours with pressure bandage
• Regular monitoring of blood pressure, pulse and urine
• Fluid intake after about two hours if stable
• Final ultrasound check before discharge

• Take it easy physically for about a week
• Avoid sport and heavy lifting

Kidney biopsy is a safe procedure overall. Nevertheless, complications can occur in rare cases:

• Bleeding (most common complication, usually mild; temporary blood in the urine possible)
• Pain at the puncture site
• Very rarely major bleeding or injury to surrounding structures

Detailed information can be found in the information form.

The tissue samples taken are examined by specialised nephropathologists.

• In acute cases, a preliminary result is often available on the same day, otherwise usually on the following day.
• The final result is usually available within around 14 days.

The findings are discussed with both the patients and the referring doctors and the further course of action is determined jointly.