Correlation of Urine Color

Color or Appearance Possible Cause

ColorlessHighly dilute, recent fluid consumption

Pale yellow Normal

Yellow Normal

Amber Normal, concentrated urine

Deep yellowConcentrated sample, riboflavin, dehydration

OrangeAntibiotic, pyridium, bilirubin, anticoagulant

PinkPorphyrin, myoglobin, hemoglobin, beet pigment, rhubarb

RedPorphyrin, myoglobin, hemoglobin, beet pigment, uroerythrin

GreenOxidized bilirubin (biliverdin), clorets, pseudomonas infections

Blue Diagnex, methylene blue, indicant

Brown Bilirubin, hematin, methemoglobin

Gray Furazolidone, nitrofurantoin

Black Melanin, homogenistic acid