A hypodermic needle is used to inject or withdraw fluids from the body.
Main uses:
• Giving injections (vaccines, insulin, antibiotics, IV drugs).
• Drawing blood samples for laboratory tests.
• Administering fluids through IV lines.
• Aspirating fluids (e.g., abscess drainage in medical settings).
It is attached to a syringe and must be sterile and single‐use to prevent infection.