Assertion: alkaptonuria's urine | /r/MadeOf | hga
Facets:
Source sentences:
text: A yellow-orange precipitate caused by the reduction of copper forms when urine containing HGA is tested with Benedict’s reagent; the color of the supernatant solution is brownish-black, which indicates the diagnosis of alkaptonuria.
text: There are several simple methods to test for HGA in the urine: the addition of sodium hydroxide (an alkali) to the urine will turn it dark; urine with HGA turns black when reacted with iron chloride; and alkaline urine containing HGA blackens photographic paper.