Hypodermic needle tubing, also known as "hypo tube" or "medical grade needle tubing", is small diameter tubing intended for use in medical applications, although it can be used in non-medical applications as well. The word "hypodermic" itself is defined as "beneath the skin" and traditionally hypodermic tubing has been fabricated into sharp needles for injections or extractions of fluids or tissues into human or animal bodies.