How about occult blood

summary

There are some friends in the physical examination, urine test will show occult blood, many people do not understand this, so do not know how, recently I studied, I will tell you about it.

How about occult blood

First, occult blood, that is, invisible blood, is often detected by chemical methods when red blood cells are damaged. Occult blood in urine is catalyzed by peroxide to release oxygen from hemoglobin in red blood cells. O-benzidine generates blue compounds under the action of oxygen. Some oxidants, such as peroxidase in hypochlorite microorganism, can make occult blood in urine positive.

Second, occult blood in urine test is the symptom of bleeding, which is mostly caused by inflammation, stones, tumors and so on. In this case, when the blood vessels are damaged or the pore size of blood vessels is increased, not only the red blood cells will leak out, but also the protein in plasma will leak out, and the qualitative determination of protein will also appear different degrees of positive. Microscopic examination has red blood cells, and the color of urine is red.

Third, there are many reasons for occult blood in urine test, but it is mainly caused by urinary system diseases, such as renal tuberculosis, nephritis, urinary tract infection, urinary calculus, urinary tract tumor, etc.

matters needing attention

Urine test occult blood must drink more water, usually pay attention to diet, prohibit eating spicy and greasy food, mainly light, eat more fruits and vegetables.