Designs Needle
How can draw blood with a syringe?
I know many will judge this action, however, I need an answer as how. My brother has diabetes and has designed syringes to inject insulin into your bloodstream. I have to draw blood and I have access to their needles. I tried before, I completely put the needle in my arm in three places and his leg in two places where I could see a vein, pulled the plunger back, and got nothing, except a few drops at the tip. A complete answer would be greatly appreciated. Thank you.
There are different needles designed for various medical procedures. is designed to suck the isulin the bottle, but no human veins. / Jibreel
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