Uremia is accumulation of urea is blood. It occurs due to malfunctioning of kidney.
Renal calculi refers to the formation of stones or insoluble mass of crystallised salts (oxalates, etc.) within the kidney. Glomerulonephritis is the inflammation of glomeruli of kidney.
Ketonuria is a medical condition in which ketone bodies are present in the urine. It is seen during stravation or more commonly in type 1 diabetes mellitus.

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