A blood test is when a sample of blood is taken for testing in a laboratory. Blood tests have a wide range of uses and are one of the most common types of medical test. For example, a blood test can be used to:
- assess your general state of health
- confirm the presence of a bacterial or viral infection
- see how well certain organs, such as the liver and kidneys, are functioning
A blood test usually involves the phlebotomist taking a blood sample from a blood vessel in your arm, and the usual place for a sample is the inside of the elbow or wrist, where the veins are relatively close to the surface.
Our surgery offers regular appointments for blood tests before 14:30 everyday (Blood test on a Thursday will be before 10.30). We also do blood tests for children, as long as the child is happy to have blood taken from the arm. If this is not the case, then a form will need to be filled in and signed by the GP, and taken to the Sheffield Children's Hospital where they will take a sample from the finger instead.
You can find out more about blood tests, their purpose and the way they are performed on the NHS Choices website.