Kidney Biopsy

What is the test?

A kidney biopsy is a procedure to obtain a sample of your kidney tissue so that it can be examined under a microscope. A kidney biopsy is useful in patients with kidneys that are not functioning properly, to determine the cause of the problem and the most appropriate treatment.

How do I prepare for the test?

You will need to sign a consent form giving your doctor permission to perform this test. Tell your doctor if you have ever had an allergic reaction to lidocaine or the numbing medicine used at the dentist's office.

Your doctor will order blood tests to find out if you are at extra risk for bleeding after the procedure. If you take aspirin, nonsteroidal anti-inflammatory drugs, vitamin E or other medicines that affect blood clotting, talk with your doctor. It may be necessary to stop or adjust the dose of these medicines before your test. If you have diabetes and take insulin, discuss this with your doctor before the test.

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