Urine Color
Urinalysis and Body
Fluids Review 488
Normal Yellow due to urochrome
Dilute urine Colorless, pale yellow
Concentrated urine Dark yellow, amber
Bilirubin Amber, orange, yellow-green; yellow foam on shaking
Urobilin Amber, orange; no yellow foam on shaking
Homogentisic acid Normal on voiding; brown or black on standing
Melanin Brown or black on standing
Methemoglobin Brown or black
Myoglobin Red; brown on standing
Blood/hemoglobin Pink or red when fresh; brown on standing
Porphyrin Port-wine
Drugs, medications, food Green, blue, red, orange
Pseudomonasinfection Green, blue-green