Why does blood obtained through vein and not from the arteries when collecting blood

Veins are used for blood draws for a few reasons. ... Arterial blood is oxygenated where as venous blood is much less oxygenated. Vein walks are thinner than arteries, therefore, easier to access with a needle. Veins are closer to the skin than arteries, therefore, they are much easier to access with a needle.

Explanation:

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