Originally posted by DiamondBling
Thanx D, i'm aware of this already. Now is it possible for the needle to go completely through the vein and miss it.
Lets say you have the visible vein pumped for injection, now do u just insert the pin just enough to make sure that it is in there and draws blood???
Go in at an angle where the syringe is almost parallel to your arm. You want to insert the needle so you're injecting the direction the blood flows, which means you're pushing the plunger TOWARD you! It will take some practice but you will eventually get it.

A common problem is many people have veins that "roll", meaning that you stick the needle in and the vein will roll to the side. You can try to counteract this by flexing your wrist down as to add some tension, but it's best to just get the syringe at the perfect angle, and then push it in.

It is hard to describe how you can tell when you're actually in the vein, so there is a sure-fire way. Just pull back a little on the plunger and one of 3 things will happen:

1) You get a beautiful crimson cloud in the barrel of the syringe.
2) You get nothing but air.
3) As soon as you stick the needle in, blood will shoot into the syringe.

If #3 is the case - PULL OUT! You hit an artery and not a vein, this is NOT GOOD and injecting into an artery CAN CAUSE YOU TO LOSE BODY PARTS!

If #2 is the case - pull the needle back out a little, not out of your arm, but just back a little. Play around and see if you can find it, because you're probably very close!

If #1 is the case - you're in. S-L-O-W-L-Y push the plunger in a little, pull back a little (to ensure you're still in the vein), and then push it the rest of the way in. Once all the fluid is injected, you can pull back drawing blood into the syringe, then inject it; this simply purges the syringe of any drug.