The separation of blood into four different groups occurred not so long ago. Around 1901, Karl Landsteiner, who later became a Nobel Prize laureate, managed to single out the first three - A, B and O, which became fundamental to all medicine. The fourth group was opened later only because it was quite rare among Europeans. And in 1928, the official designations of all four groups were approved - O (I), A (II), B (III) and AB (IV). And, although today more than 250 types of blood are known, it is important to know exactly these four, since they are the most important and serious.
Why is it necessary to be informed about how to find out your blood type? There are several reasons. The most serious - in the event of an accident, you may need a blood transfusion. The fact is that the groups have mutual compatibility. For example, a person with blood 2 (A) can be a donor only for recipients (needing a blood transfusion) with 2 (A) and 4 (AB). Therefore, people in the war zone or engaged in work associated with a risk to life are given special tokens or stripes indicating their blood type along with the Rh factor. This is to ensure that healthcare professionals know exactly this data in any situation. Indeed, in such cases, medical care is often required immediately, and the patient may be unconscious. Also, information about the blood group is sometimes indicated in the passport. This is done more out of precaution, but in the event of an accident it can greatly help doctors.
Therefore, about where and how to find out your blood type, you need to take care as soon as possible.
This factor is passed on to us by inheritance and does not change throughout life, so you will have to spend time on its determination only once. Moreover, which group the child will have depends on the parents. If you are interested in how to find out the blood type at home, even approximately, here are detailed examples of which combinations give this or that result. It doesn’t matter whether mom or father has a certain type.
The combination of the first two groups will result in the same with one hundred percent probability.
The first and second - the first or second.
The first and third - the first or third.
The first and fourth - the third or second.
Two second - the first or second.
Third and second - second, first, third or fourth.
The second and fourth - one of them, as well as the third.
With a combination of two third groups, the child will have a third or first.
Third and fourth - second, third or fourth.
If both parents have a fourth, then the baby will receive the same or third, or second.
Here's how to find your blood type from the table. As you can see, the results are quite different, even if the parents have the same one. According to statistics, the majority of the world's population has the second or first groups, and the rarest - the fourth.
There is also such a thing as a Rhesus factor. It is indicated by the letters Rh with plus (if positive) and minus (if negative). Together, it looks like this: 2 (A) Rh- means the second blood group with a negative Rh factor. It is also important, since the blood of people with different indicators is incompatible. This is taken into account during transfusion or surgery. Also, the Rhesus factor affects the course of pregnancy with a negative value in the expectant mother. If the baby is positive, it can cause certain problems during gestation and childbirth. But you should not be afraid of this, since modern medicine has already learned to correct this situation, and pregnancy in most cases ends successfully.
Until the moment you know your blood type exactly 100%, you will need to contact your doctor and take tests. This is done in any clinic and does not take much time. Doctors also carry out a blood group test if for some reason you need serious medical care, and this factor is not reflected in your medical record.
Currently, there are even certain diets for owners of various groups, and it is believed that a predisposition to diseases is often associated with this factor.