Once in your lifetime, you may have gone for a blood test for one or another reason. Blood tests are not meant just to check symptoms of any kind of disease but also meant for biological samples. There are many biobanks, which collect blood samples for different kinds of research purposes. No doubt, blood tests help doctors to check for certain diseases and conditions. They are also used to check the function of your organs and how well treatments are working.

After taking the blood samples from your body, they are sent to laboratories for further research and analysis. The professionals at these laboratories may use your whole blood to count blood cells or may separate the blood cells from the fluid, called plasma or serum.

There are many kinds of blood tests; here is a list of some of the most common tests: A complete blood count (CBC): It is one of the most common tests and measures red blood cells and white blood cells in your blood. This test helps to detect diseases and disorders. Apart from measuring red and white blood cells, this test involves assessing platelets, haemoglobin, haematocrit and mean corpuscular volume.

Blood enzyme tests: They are done to diagnose a heart attack.

Blood clotting tests: They are done to check proteins in the blood, which affect the process of blood clotting.

Blood chemistry tests/ basic metabolic panel: It is a group of tests, which are done on the fluid (plasma) of blood. It is done to measure different chemicals in the blood. This test helps doctors to get information regarding your muscles, organs and bones.

Blood tests to assess heart disease risk: This test ass’s substances in the blood that carry cholesterol. A lipoprotein panel informs about total cholesterol, LDL cholesterol, HDL cholesterol and triglycerides (a kind of fat in the blood). The above-mentioned blood tests are common and help doctors to assess how well organs like the kidneys, thyroid, liver and heart are working. Your blood samples also help doctors to analyse how well your blood is clotting and check whether you have risk factors for heart disease. They can also be used to diagnose diseases and conditions like cancer, HIV/AIDS, diabetes, anaemia and coronary heart disease.

Blood fluid contains different substances, which are measured by taking blood samples and by analysing the same, health problems can be detected in their early stages. Generally, when you go for blood samples, you have not required any special preparations. However, in some cases, your doctor may ask you to stay empty stomach for 8 to 12 hours before the test, so it is better to consult your doctor. However, blood tests have a few risks, but they are minor and disappear in very short time. There are professional laboratories to collect blood samples and examine the same. Hence, a person is advised to go to a certified laboratory only for the blood test for any reason.

During taking blood samples, you may feel discomfort and bruise at the site where the needle is inserted. However, these issues are not very serious and go away shortly.