Hematuria Dark Urine

Pelvis | Urology | Hematuria Dark Urine (Symptom)


The hematuria or blood in the urine may or may not be accompanied by pain, but it is always abnormal and should be investigated further.


Painful hematuria can be caused by a number of disorders, including infections and stones in the urinary tract. Painless hematurias can also derivars of many causes, including cancer. The colour of urine can range from blood red (or red) to brown (popularly described as cola), depending on whether the blood is fresh or has been transformed into hemoglobin by the effect of acidic urinary pH.

The urine in normal conditions does not have blood. Hematuria is the presence of erythrocytes in the urine in amounts greater than normal. In healthy conditions the chemical test of urine does not reveal the presence of hemoglobin in the urine and urinary sediment examination is fresh from 0 to 2 red cells per field or in the Addis count with 24-hour urine no more than 1 million elements. Hematuria is considered when these limits are exceeded.

Hematuria is manifested by changes in colour and transparency in the urine when it is strong enough to dye (over 1,5 ml. of blood per litre of urine), this is a gross hematuria. In other circumstances, the amount of blood lost to the urinary tract is less than 1,5 ml. This is the reason why there is no change in color or appearance of urine. Hematuria is found in this case only with the chemical test and urinalysis and is called microscopic hematuria.


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