Urine Color
Urinalysis and Body
Fluids Review 488
Normal Yellow due to urochromeDilute urine Colorless, pale yellowConcentrated urine Dark yellow, amberBilirubin Amber, orange, yellow-green; yellow foam on shakingUrobilin Amber, orange; no yellow foam on shakingHomogentisic acid Normal on voiding; brown or black on standingMelanin Brown or black on standingMethemoglobin Brown or blackMyoglobin Red; brown on standingBlood/hemoglobin Pink or red when fresh; brown on standingPorphyrin Port-wineDrugs, medications, food Green, blue, red, orangePseudomonasinfection Green, blue-green