What does "Needle" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
A needle in the context of medicine is a very thin, sharp tool that is often attached to a syringe, which is a tube with a plunger. It is used to either inject substances into the body or remove fluids from it. For example, when you get a vaccine, the medicine is delivered into your body through a needle. Similarly, when a doctor needs to test your blood, a needle is used to draw the blood out.
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