So, I will post my question here then. I've gone through archives and can't find the post where was similar issue.
Anyway, long time iv user, sterile technique, but bad veins. I would LOVE to use different injection sites but it's almost impossible, so I usually turn back to my 3-4 sure ones. Today I tried my forearm cephalic vein. Everything was correct: tourniquet in the right hight, touched it thoroughly, vein wasn't rolling, a good 5-6mm radius... So it would've been absolutely no problem to hit. And I did. Needle was in the vein, I am pretty sure. But no blood. I tried the method when you start drawing back first the vacuum. So maybe this was the cause? That the vacuum was too hard and that's why I didn't register? But it seems ridiculous as this vein is huge and lively and probably all the other veins in his work are jealous of him being so veiny as vein can be... So why can't i register? I was most definitely in, gently poked around, touched the skin, then not so gently poked around, finally pushed THROUGH the vein but pulling back still no blood... Was my vein taking a vacation maybe? Needle too small? Vasoconstriction? What?
Or if anyone has good tips to get those good forearm veins that seem large and easy to hit but (for me) never are.