Benedict's qualitative test

Benedict's qualitative test

Etymology: Stanley R. Benedict, American biochemist, 1884-1936
a test for sugar in the urine based on the reduction by glucose of cupric ions. Formation of an orange or red precipitate indicates more than 2% sugar (called 4+), yellow indicates 1% to 2% sugar (called 3+), olive green indicates 0.5% to 1% sugar (called 2+), and green indicates less than 0.5% sugar (called 1+). It is not in common use. Also called Benedict's method.