 [ Symptoms ] had a urinalysis and it came back positive for nitrite and bilirubin   what does this mean  received summary of urinalysis as abnormal and listed appearance as turbid color orange bilirubin 1+ nitrite positive and protein trace [ Disease ] bilirubin is a by product of the liver system but small amount of bilirubin detected on a urine test strip may not necessarily indcated a problem in this area concentrated urine can give a false reading so it is up to your doctor to determine the significance nitrites are positive in the presence of a possible urinary infection again it would be up to your medical provider to determine if this is a possibility