The blood test has a very high value 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.
More often for the study of the qualitative, as well as the quantitative composition of the blood make a general analysis of it. In this case, the fence is most often produced from an unnamed finger. After that, 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 in the range of 3.7 * 10 12 / l and up to 4.7 * 1012 / l. For men, the erythrocyte norm limits are set from 4.0 * 10 9 / L to 5.5 * 10 12 / L. The value of the concentration of hemoglobin in the blood is fairly 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 health is 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. At the moment, the following level of white blood cells is considered normal: from 4.0 * 10 9 / L and ending at 9.0 * 10 9 / 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 general analysis of blood 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 take into account the content of platelets in the blood of a person. 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 blood test for platelets is at the level of 150-450 * 10 9 / l (according to the recommendations provided by the World 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. An increase in platelet count may indicate the uncontrolled production of these cells in the red bone marrow located in some bones.
Another very important indicator here is the ESR. 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.