Different Effects and Symptoms of Starvation Mode. Starvation happens when the body is deprived of the essential nutrients it requires for proper function and survival. When the body does not receive these nutrients that come from food and liquids, side effects occur.
Why It Is Done. A kidney biopsy is done to: 1  Find kidney disease when there is blood or protein in the urine or when the kidneys are not working well. 2  Check kidney problems seen on an ultrasound or a CT scan. 3  Watch kidney disease and see if treatment is working.  Find out why a transplanted kidney isn't working well.
Why It Is Done. A kidney scan is done to: 1  Check the blood flow through the kidneys. 2  Abnormal flow may mean narrowed renal arteries that can cause a type of high blood pressure called renovascular hypertension. 3  See how a transplanted kidney is working.uring a scan to look at kidney function, a radioactive tracer substance is injected into a vein in the arm and then travels through the bloodstream to the kidneys. The tracer flows through the blood vessels in the kidneys and then is excreted into the urine.