Medical Definition of Kidney stones, cystine
Cystinuria is the most common defect in the transport of an amino acid. Although cystine is not the only overly excreted amino acid in cystinuria, it is the least soluble of all naturally occurring amino acids. Cystine tends to precipitate out of urine and form stones (calculi) in the urinary tract.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 7/1/2016
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