Another method that may be used to draw the blood is by inserting a needle with a catheter (soft rubber like flexible straw) in a large vein in your arm.

• 另外一种可能用于抽取血液的方法是，把一根带导管（类似易弯曲的吸管的软橡胶管）的针头插入你手臂的大静脉内。