Day 29
Post#29Â Â Â Â Â Â Â Â Â Â Â Â Feb 9, Â 2020 Â Â Â Â Â Â Â Â Sun 23:44 PM
Ever noticed, that blood sampling, or pricking for the purpose is only done at ring or middle finger. Why is that?
There are small fluid-filled sacks, called bursae, wherever bone crosses muscles. These bursae in thumb, as well as small finger is connected to the whole hand, but in the middle two fingers, it is restricted to those fingers itself.
Thus, the three fingers are safest for needle pricking, as the infection, if any, would be contained.
The index finger, as well as thumb, as used a lot, has thick hardened layer of skin, called callus, making it a little difficult to penetrate.
Thus middle, and ring fingers are the safest and best option.
Also, left hand is preferred over right, as left hand is supposed to be used less.
Fun Fact: 1st drop is always discarded during blood sampling, as the blood closer to outer skin might be contaminated by tissue fluid, or any microorganism.
