Why is blood drawn from veins and not arteries?

Answer 1

Typically, blood is taken from veins instead of arteries. Arteries are the biggest passageways for blood in the body, and a person could easily bleed out if an artery was punctured. Conversely, arterioles are too small for a needle to go through. So, veins are the only tubes from which blood can be safely and easily drawn.

Answer 2

Safety and convenience - the blood in arteries is under a great deal of pressure and the walls are much thicker than veins. If you place a needle into an artery, you have a higher chance of causing a fatal bleeding than if you do the same into a vein. Also, since the walls of veins are thinner, it is easier to slide a needle into the vein.

Answer 3

arterial blood is hard to get to, cause veins are near the surface, arteries are deep and hard to find and not only that the walls of the arteries are thicker. Its just easier and less painful if that works

Answer 4

Drugs injected into the vein are returned to the heart then redistributed throughout the body rapidly. Blood in the arteries is heading to a peripheral target. Another factor is that an artery would bleed much longer as it is a higher pressure vessel.

Answer 5

Technically, the colour of blood is blue. When blood reacts (mixes) with oxygen, it changes to red.

It is drawn from a vein because: that is the system blood uses to travel around the body.

The reasons that a medic may take a particular sample from a particular site is best left to the medics.

Answer 6

Most probably take blood from the veins because they are easily visible.

Answer 7

Because how much blood arterys pump you can bleed to death quickly when one is punctured

Answer 8

Certain values are only found in venous blood. Besides, arterial draws are much more dangerous than a simple venous draw, since arterial blood continues to pump.