What is a blood test?
A blood test is when a blood sample is taken from you and then tested to check your general health.
A blood sample is a small amount of blood.
People also call the appointment when you have the blood taken 'a blood test.'
A blood sample is usually taken by a nurse from your arm using a needle, but other areas of your body can be used like the back of your hand.
The nurse puts the needle gently into a vein to draw blood. The blood goes into a test tube which gets sent away for testing.
A vein is a like a small tube which carries blood around your body.
Drawing blood is when a small amount of blood is taken from you.
After a few days, if the blood test has shown anything about your general health which needs checking, you will usually be asked to make another appointment to see a nurse or doctor.