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About this cause:
Cystinuria is an inherited defect that prevents the body’s retention of certain amino acids from excretory pathways. The clinical effect of cystinuria occurs in the urinary tract where these amino acids collect in concentrations that are much higher than normal. As a result, one of these amino acids named “cystine” has a high potential for forming solid crystals which group together to form rock hard cystine kidney stones.