Red urine, microscopic examination was normal. This is not true of
hematuria.
Beets, red peppers and other certain foods, red food dye can also cause urine
red; some drugs and their metabolites such as senna, rifampicin, Dilantin can
also cause urine was red. In addition, intravascular hemolysis hemoglobinuria,
muscle cell damage and other is red, these are not real hematuria, urine
examination can identify the presence of red blood cells.
So, if there is red blood cells in urine hematuria really is it?
No. Women's menstrual period may cause pollution hematuria, urethral
catheterization injury, can cause damage hematuria, in addition, some
counterfeiters deliberately mixed blood in the urine can cause hematuria
forgery, these cases can not be regarded as a true hematuria, urine specimen
collection time, keep an eye can be excluded.
The exclusion of the above situation, urinalysis erythrocytes ≥3 / high power
field or ≥8000 cells / ml, or 12 hours Urine red blood cell count more than
500,000, can be diagnosed as true hematuria. Generally believed that the
emergence of true hematuria means kidney, ureter, bladder, prostate and urinary
tract lesions or systemic diseases involving the urinary system to other systems
due attention should be paid.
Whether it makes sense to do a true hematuria?
No. A transient hematuria, by pollen, chemicals or drugs allergy. After
strenuous exercise, can occur a transient hematuria, or even gross hematuria,
viral infections (such as colds) can also occur occasionally, usually without
significance. Only repeatedly checked for authenticity before hematuria should
pay attention to, should be further examination.
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