Haematuria is often detected incidentally by "dipstick" tests in clinical practice, and much recent discussion in the BMJ has centred round whether haematuria in asymptomatic individuals should always be investigated or whether it can be disregarded. Certainly haematuria can sometimes be dismissed as due to contamination with menstrual blood or to a urinary tract infection, but in other cases, as one correspondent chided, why do the test if you are going to ignore the result?
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