Fanconi Syndrome is the failure of the renal tubules of the kidney to do their job. The renal tubules re-absorb nutrients into the dogs system. These nutrients including protein, glucose amino acids and water-soluble vitamins are essential to maintain normal function. Without proper function these nutrients are lost and left uncontrolled the acid/base blood balance will not be correct and will begin to affect the function of the internal organs. The dogs will loose condition and will eventually succumb to the condition.