Getting a blood test is simple today. There are precise medical indications about who should do it and at what moments in life it is convenient.

While many people consider that it is not necessary to have a blood test because they are healthy, that is precisely the reason. Blood tests are routinely requested to detect pathologies with enough time to treat them.

There are components of our blood that may manifest altered before symptoms appear . That generates a huge advantage for preventive treatment and avoids complications in the future.

When the doctor requests a routine blood test, he is looking for signs of certain diseases that are more frequent for each age. And if the patient already has a chronic disease, the routine analysis allows the professional to monitor the evolution and effectiveness of the treatment established.

Blood is used as a means to know the internal state of the body by the rapidity of the tests and its easy accessibility. The laboratories are widely distributed, the cost of the bulk of the analysis is bearable and its usefulness is scientifically proven.

As a general rule, for people who consider themselves healthy, it is only necessary to have an annual blood test . On the other hand, for patients with chronic diseases it will be necessary to shorten that period, especially at the beginning of treatments.

What is observed in a blood test?

When we talk about blood tests we are referring to performing biochemical tests on blood tissue . Blood is a liquid tissue of the body that travels through the circulatory system through veins and arteries .

Although it is liquid, the blood is formed by two groups of components:

Solids: the solid part of the blood is also known as form elements. Here we can mention red blood cells, white blood cells and platelets.
Liquids: the liquid part of the blood is the blood plasma or serum.

Blood tests are routinely indicated to determine if there are signs of disease. They are also performed to evaluate the evolution of existing diseases.
Some biochemical tests concentrate on the solid part of the blood and analyze your cells. The red blood cell count, for example, determines how many of these cells are present in a certain amount of blood. You can also count the amount of white blood cells and the amount of platelets .

On the solid part you can also know the shape when looking through the microscope. The red blood cells can be more or less large, with deformities or with particular limits that indicate the presence of some disease.

In the serum or liquid part the laboratory has infinite parameters to measure. The most common and routine is to measure the plasma concentration of sugar, creatinine, urea, uric acid and lipids . You can also measure the concentration of ions such as sodium, magnesium and potassium.

By having a blood test, the person can receive information about the hormonal concentration in their body . It is common for the thyroid profile to be requested to know the amount of hormones produced by the thyroid.

And no less important are serologies, where the laboratory seeks to detect the presence of infectious diseases or, indirectly, the presence of antibodies against those diseases.

To keep fit and know the status of one health it is advise that we do regular medical checkup in other to know the development in our system.

Blood test can be done at least once in a month, but it is advise that if a person is diagnosed for any sickness it is advise to do constant medical checkup.

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