Blood needs a very precise balance in order for your body to work well.
Then they are taken to be analysed.
Blood tests can be used for many different things, including to check cholesterol and blood glucose levels. If you're having an NHS health check, your blood test is usually a quick finger prick test that looks at the blood's glucose and cholesterol levels. If blood test results are abnormal, it gives the doctors a good indication of how to treat you or prevent problems occurring in the future.
This may be done in hospital or by your GP or practice nurse. A test for troponin can help to diagnose a heart attack, and a test for brain natriuretic peptide (BNP) can help diagnose heart failure.
If you take warfarin, your INR level (a measure of how quickly your blood will clot) will be tested regularly to make sure that you are prescribed the correct dose.Each bottle is labelled with your name, date of birth and hospital number, when the blood was taken, and has a different coloured top according to the type of test. Blood tests are usually done to check how your body copes with illness, injury, inflammation, infection and some types of medication. These help monitor your risk of heart and circulatory diseases and diabetes, or how your condition is being managed.
Tests for different chemicals and proteins can indicate how your liver or kidneys are working. If the results are higher than recommended, you may be asked to go to your hospital for a full blood test.
Usually, the blood bottles contain small amounts of a chemical to stop your blood clotting in the tube, so it can be measured accurately in the lab.
Presence of various harmful chemicals, poison and even drugs can be determined through the blood test. Blood tests are mainly used to determine physiological and biochemical states, such as disease, mineral content, drug effectiveness, and organ function. The analysis is usually performed by comparing the amount of various chemical entities present in the blood under test to the standard ratio of one or more chemical entities that are actually supposed to be present in the blood. Differences in the quantities and proportions are determined. They also help in determining the presence of pathogens in the body. The difference in the proportion of various vital metabolites and constituents in the blood help in identifying the presence of various ailments of the body. Other than this the blood being the only liquid majorly circulating in the body also performs the important hydraulic functions. This sample is usually extracted from a vein in the arm using a needle or via a finger-prick. Blood test is an important laboratory analysis performed on a blood sample. It also performs many regulatory functions like the regulation of body pH of the body and also the regulation of core body temperature. The regulation of the internal body temperature despite the changes in the outside atmosphere is particularly important in the warm blooded animals. It is therefore important that the reports of the blood test and the lab test results are properly understood by the patient so that he/she has a clear understanding of the ailment of the body.