This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Pathology
[{'content': 'Urine analysis of a patient with haematuria and hypercalciuria is most likely to reveal which of the following \nSelect and explain. \nA. Isomeric RBC, B. RBC casts, C. Nephrotic range proteinuria, D. Eosinophilluria', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hematuria is the presence of red blood cells in the urine. Microscopic hematuria is invisible to the naked eye and is often found by urinalysis or urine dipstick; it is said to be chronic or persistent if 5 or more red blood cells (RBCs) per high-power field can be seen in 3 of 3 consecutive centrifuged specimens obtained at least 1 week apa Paediatrics nephrology 5/141', 'role': 'assistant'}]