why doctors only take blood from elbow for test ?
Answers
because it's comfortable for them and it is very easy
Answer:
It is easily accessible. The patient has to just roll up their sleeve and expose nothing more than their forearm. Even giving an injection to the arm requires more exposure of the site.
It is a relatively large vein that is superficially located.
It is almost constant in it's position. Minor variations in place can be seen, but most people have a large vein in the middle, in front of their elbow.
There are structures around it which are relatively rigid, hence the risk of the vein moving away when pierced is low. The vein rests directly on the offshoot of the biceps tendon, which is a hard and rigid structure.
The arm is a convenient part of the body to use because it can be easily uncovered. The usual place for a sample to be taken from is the inside of the elbow or wrist, where the veins are relatively close to the surface.
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