Blood upon injection concern-

[F-Genetics]

I am in wk 2 of my cycle and went to do my Sustanon pin. I plunged the needle, then I did a slight retraction on the plunger to see if I was in a vein. I saw no blood in the syringe, so I injected. I pulled out the needle, capped it and then I saw blood at my point of injection. Not much, but I thought I would ask. Did I maybe just nick a vein? Because I did not see any blood in the syringe until after I pulled it out? Or did I just not retract the plunger enough?

[pebble]

If it was a small amount of blood you likely nicked a vein or artery either going in or out. It’s very common, think about any time you get a vaccination from a MD. They are always ready with a cotton swab and band-aid.
Keep an eye on it for the next few days to ensure that nothing progresses.

[MBMETC]

its possible you nicked a vien, i wouldnt be too concerned i got blood a few times when hitting delts. so long as there is no blood on asperation your g2g.

[Flacco]

This happens sometimes. You're breaking through layers and layers of skin and tissue... I wouldn't be concerned to see a little blood seep out. I bleed at injection points all the time. Just have an alcohol swab ready to wipe down you're skin right after pulling the pin out.