That extra .1 cc in the needle?

[Yowzer]

I've seen people mention this before but also note that the plunger has a dome which may offset this. So at the .4 line with a full needle, am I getting exactly .4cc or some other amount. Would be good to know since I now use insulin syringes which which are presumably exact. Not sure if I am actually getting less cc than before.

 

[Avies48]

Google air-lock technique


https://www.aaaai.org/ask-the-expert/air-lock-technique

 

[JC Grifter]

You’re getting the dose in the syringe. I had the same concerns as well.

 

[BigBaldBeardGuy]

If you draw with a regular syringe and backfill an insulin syringe you’ll see that you are getting an exact amount.

 

[CompoundLifts31]

Fill it with 5mg SD lol
Strong shit
Even that little bit would make a difference.

 

[Yowzer]

So the response seems to be that the marking on the syringe is accurate. But if I have a syringe at .4 cc with the needle full and pull the plunger back, it shows .5 cc between syringe markings. Doesn't seem like that should be correct but I can't explain it.