Cystine Stone Flashcards
What are cystine stones composed of?
Cystine stones are composed of two cysteines put together.
Cystine is a type of amino acid.
What shape do cystine stones have?
Cystine stones are hexagonal in shape.
Hexagonal shape is a distinguishing feature of cystine stones.
In which demographic are cystine stones most likely to occur?
Cystine stones can occur in young adults.
This is due to a genetic condition affecting amino acid reabsorption.
What is the cause of cystine stone formation?
Cystine stone formation is due to an inability to reabsorb COLA amino acids: Cysteine, Ornithine, Lysine, Arginine.
COLA refers to a group of dibasic amino acids.
How can cystinuria be diagnosed?
Cystinuria can be diagnosed with the cyanide-nitroprusside test.
This test specifically identifies cystine in urine.
