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Needle Size for IM vs SC

Can I use 29g 1/2 inch needle for IM injection in delts or glutes fat pad area? I bought these for SC but going with IM admin. I also have 27g 1/2 inch. Is there much of a difference. I am not so much worried about how long it takes to draw as only injecting 2x week. Any recommendations are appreciated.
Thanks

I use 28g 1/2 IM thighs or delts without issue. You’re good to go!

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Thanks

Depends on how much fat you have. I think I have about 1/4-3/8” fat in my delts so it’s pretty much SubQ for me. My thighs have almost no fat, so it’s for sure IM.

I use 1/2” 30g for shallow IM delt injections. No issues.

No. Too short. Too thin. 1-1.5 inch depending on muscle and body fat.

@GSX250
You would recommend a 1.5 inch needle for delts? Are you shooting for bone marrow?

What’s your bf percentage? I’ve been in total joint replacement surgeries with literal obese people who could do IM with a 1/2 inch needle in the lateral deltoid. It’s basically skin over muscle for those that are even remotely in shape.

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I’m only about 20-25%. Maybe I’m overestimating how much fat I have there. When I pinch my skin, I can grab a solid 3/4 of an inch of skin and fat.

Proximal humerus surgery.



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For comparison reasons here’s the fat layer of the thigh.


Dude…

For some reason watching surgery doesn’t bother me. As long as it doesn’t involve eyes

Great pics!