<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have been diagnosed with CKD stage 3b, and also advised that I had two cysts on one kidney, and an internal septated cyst on the other kidney. Should a biopsy be performed. My clinicians seem unworried, but I use the VA for treatment, and my confidence is lacking  <response>: Hello and welcome to Chat Doctor. As a Urologist, I hope you know that both kidney functions must be very poor, to be diagnosed as CKD-3b. If you can update me regarding your latest kidney function test reports urea, creatinine, with the ultrasound MRI, and other reports He, Na,K, uric acid, urine protein and micro-alb, etc, I can give you expert advice, regarding further management. Kindly clarify if you meant Veterans affairs by VA. You can send the question in my name here, with the reports. Wish you well. 