The bubbles still annoy me, but they do not seem to create any problems.
Anyone else run into this? Tapping the side and priming still leaves some bubbles behind. Any suggestions?
Always get air bubbles sticking to the side of the syringe.
Summary
how to get rid of air bubbles stuck in a syringe for subq injections
Small bubbles commonly remain even after flicking or priming and do not cause issues for subcutaneous use. People manage larger ones by expelling them, drawing extra air, or pulling slightly past the dose, while noting that slow draws and certain needle sizes help reduce them. The problem may stem from the syringe interior rather than technique alone.
What this discussion establishes- bubbles persist despite tapping and priming
- large bubbles can be pushed out or handled by over-drawing
- tiny bubbles are harmless for SQ injections
- slow drawing reduces issues especially with 30-31g needles
- syringe surface texture may be the cause
Nothing here is advice.
5 replies · 6 people
It happens, so no need to stress. Checking how much air must be injected before any problems occur helped put my mind at ease.
I push out any big ones, or draw a little extra air after filling and then push it out. A small bubble is not an issue with an SQ injection.
This is my method. Draw the syringe back outside the vial to the dose amount, insert into the vial, then draw to that amount. I usually go a bit over so I can deal with bigger bubbles before pushing down to the right level. As noted, the little ones are not a problem. Draw slowly, especially with a small 30-31 needle.
I think it must be the syringe. Some may have a different inside surface. Never saw this with hundreds of syringes until switching to these popular needles from the basic ones. I roll, flick, and flip until the stubborn bubbles merge so I can push them out. A little air probably does not matter for subq.
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