Physical examination is to check urine occult blood. What's going on here?

Some people will have a plus sign of urine occult blood when checking. Many people don't understand why there is a plus sign in urine occult blood. Some plus signs in urine are caused by inflammation of urinary system, which needs to be checked in time to find out the cause. Let's listen to the expert's explanation! First, occult blood in urine refers to the increase of red blood cells in routine urine examination. In a few cases, it can be called urine occult blood. In the urine routine examination list, urine red blood cells (RBC) are marked with "+"or "-".Generally, in the case of normal red blood cells, the column of urine red blood cells is shown as negative and indicated with "-"; When there is erythrocytosis, that is, occult blood, it is positive for occult blood, and+is used. If occult blood appears, it means that the examiner may have diseases such as urinary tumor and nephritis infection. Second, what is the positive sign of occult blood in urine? Experts explained that the common cause of occult blood in urine is inflammation of urinary system, such as urethritis, cystitis, nephritis, ureteral calculi, kidney calculi and so on. At the same time, it may cause some diseases of male genitalia, such as prostatitis. You can check it again. If yes, you can have a further examination, do a B-ultrasound of the kidneys and genitals, and check the renal function to see if there is any problem. Third, occult blood and hematuria are generally due to kidney problems, because normal people can't have red blood cells in their urine. If it's a woman, it's 2 or 3 days after menstruation, which may be left over from menstruation, and it will be normal after a few days. If it is a male, pay attention to whether there are symptoms such as frequent urination, dysuria and abdominal pain. Fourth, is the positive sign of urine occult blood serious? Experts pointed out that because the result is only 1+, it is not very serious. If you don't feel abnormal, drink plenty of water before re-examination, or re-examination after a while. It is meaningful to compare the results several times, but once doesn't mean you have kidney disease, because some people can wash away those red blood cells by drinking more water. Generally, when the red blood cells reach 3+~ 4+, they are considered as kidney calculi! So you have to test a few more times before calculating.