Blood in urine


Hematuria is the abnormal presence of blood in the urine. There are two forms of hematuria. When the urine is visibly pink or red, it's called "gross hematuria." When no blood is visible in the urine, but detected by lab tests only, it is "microscopic hematuria".

Causes of Hematuria

Blood in the urine has many causes and can come from anywhere along the urinary tract.

Different causes like infections, kidney stones, tumors, kidney disease or trauma can lead to blood being seen or detected in the urine. Blood in the urine is therefore sometimes a warning signal and a thorough evaluation is necessary. If the cause is something serious, a physician wants to diagnose it early and begin proper treatment.

In some cases, no cause seems obvious even after a thorough evaluation. This occurs in as many as 50 percent of patients with microscopic hematuria and is known as ,"idiopathic hematuria". These patients should be followed every six to 12 months with a repeat urine analysis and examination to see if things change.

We carry out a standardized evaluation of patients with hematuria consisting of the following:

1. Urine cytology
2. Urine culture and sensitivity
3. Blood tests and urinary protein levels
4. IVP (Intravenous Pyelogram) or equivalent
5. Cystoscopy


Most hematuria can be evaluated on a non urgent basis. Treatment depends on the cause.

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