The norm of the blood test, what is its significance
The norm of the blood test is very largemeaning for a person. This is due to the fact that this indicator to a certain extent represents a very real indicator of his health. Not so often, in the presence of serious diseases in humans, there is a normal blood test.
Most often for the study of quality, andalso the quantitative composition of the blood makes a general analysis of it. In this case, the fence is most often produced from an unnamed finger. After this, the blood is examined and the counts of certain of its uniform elements are analyzed. To date, there are already established fairly clear norms for a general blood test. Perhaps the most important indicator is the number of red blood cells. In the woman's blood, this figure is normally at the level of 3.7 * 1012/ l and up to 4.7 * 1012 / l. For men, the erythrocyte norm limits are set from 4.0 * 109/ l to 5.5 * 1012/ l. The value of the concentration of hemoglobin in the blood is quite closely related to this indicator. For women, its rate is from 115 g / l to 145 g / l. As for men, the following values are considered normal for them: from 130 g / l to 160 g / l. These indicators can identify various kinds of anemia, as well as erythremia.
No less important for human healthis the level of leukocytes in the blood. Most often it is used to determine the presence of infectious diseases. In this case, the norm of the blood test for this indicator may deviate from the norm and in malignant processes - leukemia of all kinds of varieties. At the moment, the following level of white blood cells is considered normal: from 4.0 * 109/ l and ending with 9.0 * 109/ l. In the event that the human body is affected by some infectious agent, the number of these cells usually increases, and sometimes several times. It is worth noting that these indicators may differ in the overall blood test in children. The norm for them is often determined by their age. And this applies not only to leukocytes, but also to hemoglobin with red blood cells.
It should also be taken into account the content of platelets inhuman blood. This value is one of the most variable. Scientists do not change the scope of this indicator very seldom. So for today the norm of the analysis of a blood on thrombocytes is at a level 150-450 * 109/ l (according to the recommendations givenWorld Health Organization). Changes in this indicator can reveal serious diseases. In the event that the number of platelets is lower than normal, the person's blood clotting rate decreases, which threatens with dangerous conditions even with minor injuries. Increased platelet count may indicate the uncontrolled production of these cells in the red bone marrow located in some bones.
Another very important indicator here isESR. It varies considerably in different population groups. The smallest this figure for men - from 1 mm / h to 10 mm / h. For women, the norms of a general blood test for ESR are from 2 mm / h to 15 mm / h. The lowest ESR is normal in children - only from 1 mm / h and up to 2 mm / h. This or that increase of the data on this indicator can speak about the development of inflammation in the human body.</ p>>