Assertion: alkaptonuria's urine | /r/CapableOf | darken on standing
Facets:
value: to alkaline
type: OTHER
Source sentences:
text: In AKU patients, HGA is excreted in large amounts into the urine, which darkens on standing.
text: Accumulation of homogentisic acid in homozygotes causes brown pigmentation of skin and eyes and damage to joints, urine blackens on standing. ...
text: of urine darkening upon standing or exposure to alkaline
text: The diagnosis may be suggested by urine that darkens on standing, or that turns black quickly when alkali is added, but the diagnosis is established by finding large amounts of HGA in urine.