<s>[INST] HI I am a GP from South Africa, I have a 37 year old patient who I treated for cystitis last week (diagnosed by leucocytes and nitrites in urine).She also had the symptom of her urine separating in the toilet and sinking to the bottom of the water, it was dark in colour and looked brownb due to the haematuria. Her symptoms have resolved and urine now normal colour but still sinking in the toilet. is there anything besides dehydration and excess protein or calcium that I shoul look for in her? thank you [/INST] Hi,Thanks for writing to health care magic.Get a urine for specific gravity. Repeat the urine examination and urine culture.Continue to ask further queries as required.Hope this helps.Take care. </s>