The various causes for this bleeding in urine (called as hematuria) can be;
1) Kidney and bladder stones
2) Urinary Tract Obstruction
3) Urinary Tract Trauma
4) Excessive exercise
5) Urinary tract Infection
6) Sickle Cell Disease
7) Kidney and bladder tumor
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Urine culture and an ultrasound are the first investigative protocol. Intravenous pyelography, CT scan, cystoscopy, etc may be followed depending on the initial investigative results. The investigation of hematuria begins with a search for bacteruria (bacteria in urine) or pyuria (pus in urine). If either is present, a urine culture should be ordered to confirm urinary tract infection (UTI). In the absence of infection, the next step is to distinguish glomerular and nonglomerular sources of hematuria. Following would be required in step wise fashion;
1) Intravenous pyelography
2) Multidetector CT urography
3) Cystoscopy (camera examination)
If these investigations are not conclusive for the diagnosis MR urography would be advised. Consulting a urologist would be best.
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