Final Dose in the Pen?

[deluge]

ltjltj said:

deluge said:

randompersonrandom said:

Peotidethrowaway said:

WLBLD said:

Peotidethrowaway said:

I put an insulin needle into the pen cartridge and inject whatever remains of the pen dose into the needle so I can measure it

Thanks, that's a really clever approach. But is it able to push back afterward? I'm a fan of my tiny pen needles ha ha

That's possible, though it kind of defeats the point. Typically you're able to pull the remaining bit out of the cart as well. Once the plunger quits moving, there's still some left over.

Beyond that, it strikes me as a decent method for verifying whether your pens are delivering accurate units. You'd simply insert the syringe needle into the cart, dial, push, and then inspect. That beats the hassle of attaching a needle to the tip and forcing it into a syringe.

Peptide Critic actually recommends this method for verifying pen accuracy, and that's how I found out my Amazon pen was a piece-o-junk.

I'll also confess that I went against the grain compared to what y'all do here. Rather than extracting the final small amount from the pen cartridge, I had a spare reconstituted vial of GHK-Cu ready, and I used a 3ml syringe to refill the cartridge directly in the pen...

Once you depress the plunger, the cartridge is out in the open air and its sterility is gone. If you try to top it off by drawing the plunger back out, you're guaranteeing a cartridge that isn't sterile. I'd urge you not to do that at all.

Yeah, I get it. That's exactly why I prefaced it with "And I will admit to doing". This isn't me telling anyone to do it. When the pen quit and I'd only gotten half a dose, I just reacted.

The danger is real to me. Still, it's probably smaller than the staph I was likely injecting into myself with those peptides before I started filtering last month. I've made my peace with it.

 

[ltjltj]

deluge said:

ltjltj said:

deluge said:

randompersonrandom said:

Peotidethrowaway said:

WLBLD said:

Peotidethrowaway said:

I put an insulin needle into the pen cartridge and inject whatever remains of the pen dose into the needle so I can measure it

Thanks, that's a really clever approach. But is it able to push back afterward? I'm a fan of my tiny pen needles ha ha

That's possible, though it kind of defeats the point. Typically you're able to pull the remaining bit out of the cart as well. Once the plunger quits moving, there's still some left over.

Beyond that, it strikes me as a decent method for verifying whether your pens are delivering accurate units. You'd simply insert the syringe needle into the cart, dial, push, and then inspect. That beats the hassle of attaching a needle to the tip and forcing it into a syringe.

Peptide Critic actually recommends this method for verifying pen accuracy, and that's how I found out my Amazon pen was a piece-o-junk.

I'll also confess that I went against the grain compared to what y'all do here. Rather than extracting the final small amount from the pen cartridge, I had a spare reconstituted vial of GHK-Cu ready, and I used a 3ml syringe to refill the cartridge directly in the pen...

Once you depress the plunger, the cartridge is out in the open air and its sterility is gone. If you try to top it off by drawing the plunger back out, you're guaranteeing a cartridge that isn't sterile. I'd urge you not to do that at all.

Yeah, I get it. That's exactly why I prefaced it with "And I will admit to doing". This isn't me telling anyone to do it. When the pen quit and I'd only gotten half a dose, I just reacted.

The danger is real to me. Still, it's probably smaller than the staph I was likely injecting into myself with those peptides before I started filtering last month. I've made my peace with it.

Just wanted everyone else to be clear on that too . Filtering and never refilling cartridges really are the right habits!

 

[Labcat]

deluge said:

ltjltj said:

deluge said:

randompersonrandom said:

Peotidethrowaway said:

WLBLD said:

Peotidethrowaway said:

I put an insulin needle into the pen cartridge and inject whatever remains of the pen dose into the needle so I can measure it

Thanks, that's a really clever approach. But is it able to push back afterward? I'm a fan of my tiny pen needles ha ha

That's possible, though it kind of defeats the point. Typically you're able to pull the remaining bit out of the cart as well. Once the plunger quits moving, there's still some left over.

Beyond that, it strikes me as a decent method for verifying whether your pens are delivering accurate units. You'd simply insert the syringe needle into the cart, dial, push, and then inspect. That beats the hassle of attaching a needle to the tip and forcing it into a syringe.

Peptide Critic actually recommends this method for verifying pen accuracy, and that's how I found out my Amazon pen was a piece-o-junk.

I'll also confess that I went against the grain compared to what y'all do here. Rather than extracting the final small amount from the pen cartridge, I had a spare reconstituted vial of GHK-Cu ready, and I used a 3ml syringe to refill the cartridge directly in the pen...

Once you depress the plunger, the cartridge is out in the open air and its sterility is gone. If you try to top it off by drawing the plunger back out, you're guaranteeing a cartridge that isn't sterile. I'd urge you not to do that at all.

Yeah, I get it. That's exactly why I prefaced it with "And I will admit to doing". This isn't me telling anyone to do it. When the pen quit and I'd only gotten half a dose, I just reacted.

The danger is real to me. Still, it's probably smaller than the staph I was likely injecting into myself with those peptides before I started filtering last month. I've made my peace with it.

One more precise point for what you're saying: as long as the stopper wasn't pushed back so far that the exposed section re-entered the fluid chamber, you're fine. That trick only works a single time, though. What I'd do instead is inject air into the cartridge, then draw the leftover solution out with a syringe so it doesn't go to waste. Still, there's a part of me that looks at the 4-5 units clinging to the sides and feels bad about throwing them away.

 

[spanky2026]

Yeah, I realize this thread is from a while back, but I have to say — this right here is the reason this community is so valuable to me.

This morning I ran into the exact same uncertainty with my first cartridge on a brand-new pen. A quick search and I had my answer.

By using the syringe push, I was able to sort out what was going on and, at the same time, verify that my pen had been dosing accurately. Clever method! Appreciate everyone.