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 or Nurse taking a blood sample from a blood vessel in your arm. and the usual place for a sample is the inside of the elbow where the veins are relatively close to the surface.
Blood samples from children are by appointment only with the Community Paediatric Phlebotomy Team, please ask reception for details.
You will be given a cream called 'Emla' to numb the child's skin before the sample is taken.
You can find out more about blood tests, their purpose and the way they are performed on the NHS Choices website.