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Blood transfusion
Blood transfusion is the process of transferring blood or blood products into one's circulation intravenously. Transfusions are used for various medical conditions to replace lost components of the blood.
Blood tests
Blood tests
A blood test is a scientific examination of a sample of blood, typically for the diagnosis of illness or for the detection and measurement of drugs or other substances. Blood tests have a wide range of uses and are one of the most common types of medical test.
Blood pressure test

A blood pressure test is a simple way of checking if your blood pressure is too high or too low.

Blood pressure is the term used to describe the strength with which your blood pushes on the sides of your arteries as it's pumped around your body.

Blood pressure (low)
Hypotension is the medical term for low blood pressure (less than 90/60). A blood pressure reading appears as two numbers. The first and higher of the two is a measure of systolic pressure, or the pressure in the arteries when the heart beats and fills them with blood. Low blood pressure can have causes that aren't due to underlying disease. Examples include family history of low blood pressure or medication side effects.
Blood in urine (hematuria)
Having blood in your urine (pee) can be a sign that something is wrong with your kidneys or another part of your urinary tract. The medical name for blood in your urine is hematuria. There are two types of hematuria: If you can see the blood in your urine, it is called gross hematuria.
Blood groups
Blood groups
There are 4 main blood groups (types of blood) – A, B, AB and O. Your blood group is determined by the genes you inherit from your parents. Each group can be either RhD positive or RhD negative, which means in total there are 8 blood groups.
Blood clots

A blood clot is a clump of blood that has changed from a liquid to a gel-like or semisolid state. Clotting is a necessary process that can prevent you from losing too much blood in certain instances, such as when you’re injured or cut.

When a clot forms inside one of your veins, it won’t always dissolve on its own. This can be a very dangerous and even life-threatening situation.