Assertion: alkaptonuria's urine | /r/CapableOf | react with iron chloride
Facets:
Source sentences:
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.