Hematuria is a medical term describing the presence of blood in the urine.

Gross hematuria means the urine is visibly bloody; this indicates severe internal bleeding (usually a hemorrhage in the kidneys or bladder caused by problems such as trauma, infectious disease, or mechanical damage from a large kidney stone).

Microscopic hematuria means the blood cannot be seen with the naked eye, but can be detected with a microscope or with chemical tests. This condition also indicates problems such as kidney damage.

The information in this writeup was taken from the science dictionary at http://biotech.icmb.utexas.edu/; I oversaw the development of the dictionary (the website was mothballed in 1998) and I believe I wrote the entry this is based on.

Hem`a*tu"ri*a (?), n. [NL. See Hema-, and Urine.] Med.

Passage of urine mingled with blood.


© Webster 1913.

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