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.
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.
For children under that age of 10, blood samples are normally taken at Birmingham Children’s Hospital at the Outpatient department after a request is made by your GP.
You can find out more about blood tests, their purpose and the way they are performed on the NHS website.