Pen Needle Size
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My wife and I currently use 33 x 4mm Pen tip needles. She is still having problems with everything she takes leaving bumps and red spots. She is 5’1” & 112lbs. She is wondering if the 4mm length may be too short. I can’t find 33 x 5mm, I found 32 x 5mm.
Wonder if anyone has experienced problems with 4mm being too short and causing the same issue. I use Hispira BAC for everything. -
The mistype on the weight gave me a little laugh, at least I hope she's not that weight

Hopefully it's not the 4mm needles causing the bumps because I just bought a couple boxes of 4mm length for my pens when I get them. I had asked a question on here what needle lengths everyone is using and it seemed like a lot of people use those. I don't think your wife will notice a difference between 32g and 33g, I have used 30g and barely feel anything. What body part does she inject? -
Definitely try a longer needle. Even though it may not seem believable, a longer needle doesn't cause any more pinch or pain than a shorter needle. I've found a longer needle avoids welts and bumps, and also, a very slow injection especially if it's a lot of volume, more than 30 units on 100.
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Definitely try a longer needle. Even though it may not seem believable, a longer needle doesn't cause any more pinch or pain than a shorter needle. I've found a longer needle avoids welts and bumps, and also, a very slow injection especially if it's a lot of volume, more than 30 units on 100.
@bangkokiscool
So longer needle. 5mm or 6mm?
1112lbs was a bad typo… she would kill me if she saw that. 112lbs -
8mm- 5/16" which is standard insulin needle length. Amazon has the one from Novo Nordisk, supposed to be ceramic coated but pricy.
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I’m a diabetic so have injected via pens for years - I use BD Ultra-Fine 5mm X 31G.
You will literally not even feel them going in - no comparison whatsoever to any normal syringe.
Also I get them for free

I’ve demonstrated to friends just grabbing one and stabbing myself 10-15 times really quickly in my gut to show you don’t feel them - and you seriously don’t.
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@Commander Please post your progress with both. 4mm was too short for my research subject. I'm not sure if 5mm will be much better
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For me 4mm places it in the dermis (mesotherapy level) and I get a raised blob. 6mm and I don’t have that issue.
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@commander I’ve been using these for the past month. Don’t feel them and doesn’t drag the skin on exit. Was $9.99 the first time I ordered them, now $12.99 (sad face)
Pen Tips 33G x 6mm, Universal Fit, 100/bx, Comfortable, Extra-Thin https://a.co/d/0bC6UZue -
@commander I’ve been using these for the past month. Don’t feel them and doesn’t drag the skin on exit. Was $9.99 the first time I ordered them, now $12.99 (sad face)
Pen Tips 33G x 6mm, Universal Fit, 100/bx, Comfortable, Extra-Thin https://a.co/d/0bC6UZue -
I just ordered a box of 32g 6mm, too!