Causes of Yellow or Green Colored Urine

Yellow coloration of the urine normally occurs because of excretion of urochrome. This color may be more intense with:

(1) starvation

(2) thyrotoxicosis (increased metabolic rate)

(3) fever (increased metabolic rate)

Additional causes of a yellow color:

(1) riboflavin

(2) infusion of fluorescein sodium

(3) mepacrine

Causes of a yellow-green color:

(1) ingestion of foods rich in carotenes

(2) methylene blue

Causes of a green urine:

(1) amitriptyline

(2) biliverdin

(3) methocarbamol

(4) conversion of a blue colored compound to green by urochrome

(5) chlorophyll

(6) propofol

Causes of a yellow-brown color:

(1) aminosalicylic acid

(2) bilirubin

(3) bismuth

(4) mercury

(5) sulfonamides

(6) nitrofurantoin