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Urine color will vary between species, but it is normally some shade of yellow depending on the concentration. Abnormal color changes in the urine could be due to drugs, increased urinary pigments or red blood cells. Red to reddish-brown could be due to either hematuria, hemoglobinuria, or myoglobinuria. Yellow-green to yellow-brown is associated with bilirubinuria. Occasionally, unusual colors may be caused by dyes associated with food or drugs.
Urinalysis