When the urine is red and free of haem pigments (e.g. erythroctyes, haemoglobin or myoglobin), then the urine may be discoloured and described as 'raspberry', or 'cherry-red'
Normally, urine is some shade of yellow with acid urine usually a darker colour than alkaline urine. Pathologically, it may be any colour.
Unusual Urine 007 from @KateTietjens. 15 min post methylene blue = traffic light urine!
The plumbing problem is this: a man has a urinary catheter in situ, it won't come out. What are you going to do about it?
Purple Urine: Usually alkaline urine with degradation of indoxyl sulfate (indican), dietary tryptophan metabolite, into indigo (blue) and indirubin (red)
A 72 year old female is admitted following an emergency abdominal aortic aneurysm repair. Explain the biochemical results and brown urine
You manage a young male with a subarachnoid haemorrhage. You are called to review because the patient has started to pass green urine
Casual perusal of the output from a patients indwelling catheter revelaed green urine. What are the commonest causes of this unusual urine?
You are wandering past the bedside of a 42 year old male with a cerebral abscess…and you notice he has orange urine. Unusual Urine.