Can a reconstituted peptide be divided between two vials?

[Mara_aa]

Hi everyone,

If this has come up before, I apologize — I looked but nothing turned up, so sorry if I overlooked it.

I also want to be upfront: I already suspect this question may be a bit silly, but here it goes anyway.

I have a vial of Tirz that still needs reconstituting, and I'd like to divide the resulting solution into two vials, 50/50.

Can that be done without compromising sterility or integrity?

I'd really appreciate any input on sterility, handling, or anything else.

Thanks a lot!

 

[FRMN01]

Obtain vials that are sterile and sealed. After reconstituting the peptide in the standard way, pull out 1/2 of the liquid and put it into a fresh sterile vial.

 

[ambot88]

Sure, it works. Sterile vials are available through a medical supply shop or on amazon. After you mix the original vial, simply withdraw 50% and transfer it into the other vial. I do this often because I split with my sister—I prepare the batch, then place her portion into a new vial.

 

[indolent]

Mara_aa said:

Hi everyone,

If this has come up before, I apologize — I looked but nothing turned up, so sorry if I overlooked it.

I also want to be upfront: I already suspect this question may be a bit silly, but here it goes anyway.

I have a vial of Tirz that still needs reconstituting, and I'd like to divide the resulting solution into two vials, 50/50.

Can that be done without compromising sterility or integrity?

I'd really appreciate any input on sterility, handling, or anything else.

Thanks a lot!

The term for this is an aliquot. Because of sterility concerns, I stay far away from doing it — even if whoever sells the empty vial says it's "sterile." That said, a lot of knowledgeable folks in this space do it anyway.

Personally, what I do (alongside other off-label practices) is continue drawing from a refrigerated vial of reconstituted tirzepatide for as long as 3 months. The condition for that is swabbing the stopper with alcohol diligently each and every time, recon included. It also requires bacteriostatic water ... genuine stuff (Pfizer Hospira), or from one of a very small number of group buy orgs that run testing on theirs. Finding it in Europe is difficult, I realize.



I'm also fine with freezing reconstituted vials and then thawing them to start the 3 months of use.

Your mileage may vary ... as you read and learn more, you have to decide your own risk tolerance.

 

[Mara_aa]

FRMN01 said:

Obtain vials that are sterile and sealed. After reconstituting the peptide in the standard way, pull out 1/2 of the liquid and put it into a fresh sterile vial.

Great, I'll be sure to use fresh sterile sealed vials and take care with the whole process. Thanks so much for the assistance!

 

[Mara_aa]

ambot88 said:

Sure, it works. Sterile vials are available through a medical supply shop or on amazon. After you mix the original vial, simply withdraw 50% and transfer it into the other vial. I do this often because I split with my sister—I prepare the batch, then place her portion into a new vial.

Thanks, that helps a lot!

It's reassuring to hear that this also works fine in real use. I'll be sure to use suitable sterile vials and be careful throughout the process. Thanks so much for the guidance!

 

[Mara_aa]

indolent said:

Mara_aa said:

Hi everyone,

If this has come up before, I apologize — I looked but nothing turned up, so sorry if I overlooked it.

I also want to be upfront: I already suspect this question may be a bit silly, but here it goes anyway.

I have a vial of Tirz that still needs reconstituting, and I'd like to divide the resulting solution into two vials, 50/50.

Can that be done without compromising sterility or integrity?

I'd really appreciate any input on sterility, handling, or anything else.

Thanks a lot!

The term for this is an aliquot. Because of sterility concerns, I stay far away from doing it — even if whoever sells the empty vial says it's "sterile." That said, a lot of knowledgeable folks in this space do it anyway.

Personally, what I do (alongside other off-label practices) is continue drawing from a refrigerated vial of reconstituted tirzepatide for as long as 3 months. The condition for that is swabbing the stopper with alcohol diligently each and every time, recon included. It also requires bacteriostatic water ... genuine stuff (Pfizer Hospira), or from one of a very small number of group buy orgs that run testing on theirs. Finding it in Europe is difficult, I realize.



I'm also fine with freezing reconstituted vials and then thawing them to start the 3 months of use.

Your mileage may vary ... as you read and learn more, you have to decide your own risk tolerance.

Thanks for offering your view — it means a lot to me. The worries about sterility make total sense to me.

Since I'm still getting the hang of this, I'll need to give serious thought to which method feels right for me.

One thing I'm wondering about: you mentioned freezing the mixed vial and thawing it out before beginning the 3-month period — in your experience, does the potency hold up nicely that way?

I'm truly thankful for everything folks here are willing to teach.

 

[AcadiaPeptides]

indolent said:

Mara_aa said:

Hi everyone,

If this has come up before, I apologize — I looked but nothing turned up, so sorry if I overlooked it.

I also want to be upfront: I already suspect this question may be a bit silly, but here it goes anyway.

I have a vial of Tirz that still needs reconstituting, and I'd like to divide the resulting solution into two vials, 50/50.

Can that be done without compromising sterility or integrity?

I'd really appreciate any input on sterility, handling, or anything else.

Thanks a lot!

The term for this is an aliquot. Because of sterility concerns, I stay far away from doing it — even if whoever sells the empty vial says it's "sterile." That said, a lot of knowledgeable folks in this space do it anyway.

Personally, what I do (alongside other off-label practices) is continue drawing from a refrigerated vial of reconstituted tirzepatide for as long as 3 months. The condition for that is swabbing the stopper with alcohol diligently each and every time, recon included. It also requires bacteriostatic water ... genuine stuff (Pfizer Hospira), or from one of a very small number of group buy orgs that run testing on theirs. Finding it in Europe is difficult, I realize.



I'm also fine with freezing reconstituted vials and then thawing them to start the 3 months of use.

Your mileage may vary ... as you read and learn more, you have to decide your own risk tolerance.

This drifts a little from the main subject, but my marriage has actually benefited from peptide experimentation in terms of communication.

My wife is in charge of a lab, while I work in non-profits. It’s rare for us to talk the way we do now. " do you know what aliquot means?" - obviously, yes.

or "honey, do you have 4mm PES .22um individually wrapped sterile filters?" well of course, those are part of my daily routine.

And I won’t even begin on the looks I get when I ask simple mg vs ml and concentration questions.

 

[Mara_aa]

AcadiaPeptides said:

indolent said:

Mara_aa said:

Hi everyone,

If this has come up before, I apologize — I looked but nothing turned up, so sorry if I overlooked it.

I also want to be upfront: I already suspect this question may be a bit silly, but here it goes anyway.

I have a vial of Tirz that still needs reconstituting, and I'd like to divide the resulting solution into two vials, 50/50.

Can that be done without compromising sterility or integrity?

I'd really appreciate any input on sterility, handling, or anything else.

Thanks a lot!

The term for this is an aliquot. Because of sterility concerns, I stay far away from doing it — even if whoever sells the empty vial says it's "sterile." That said, a lot of knowledgeable folks in this space do it anyway.

Personally, what I do (alongside other off-label practices) is continue drawing from a refrigerated vial of reconstituted tirzepatide for as long as 3 months. The condition for that is swabbing the stopper with alcohol diligently each and every time, recon included. It also requires bacteriostatic water ... genuine stuff (Pfizer Hospira), or from one of a very small number of group buy orgs that run testing on theirs. Finding it in Europe is difficult, I realize.



I'm also fine with freezing reconstituted vials and then thawing them to start the 3 months of use.

Your mileage may vary ... as you read and learn more, you have to decide your own risk tolerance.

This drifts a little from the main subject, but my marriage has actually benefited from peptide experimentation in terms of communication.

My wife is in charge of a lab, while I work in non-profits. It’s rare for us to talk the way we do now. " do you know what aliquot means?" - obviously, yes.

or "honey, do you have 4mm PES .22um individually wrapped sterile filters?" well of course, those are part of my daily routine.

And I won’t even begin on the looks I get when I ask simple mg vs ml and concentration questions.

Wow, that's fantastic

I never thought I'd hear that peptides could help a marriage's communication.

A spouse who runs a lab has to be the biggest perk possible. The rest of us are stuck searching for terms such as aliquots, mg vs ml, and filter sizes, just praying we don't ruin it!

 

[Labcat]

Yes, that’s a smart move, because if contamination creeps in with each puncture, you won’t lose the entire batch that way. On top of that, I’d recommend running the liquid through a filter as you transfer it into the fresh sterile vial. My own routine is to always put my reconstituted peptide into new sterile vials or cartridges, filtering it during the process (a 13mm PES 0.2 microns syringe filter — you can even get one from Amazon — goes between the syringe and the needle, very easy). The reason is that sterility testing isn’t something we typically do. (Not many people fall ill or can link it back to bacteria from a vial, but I keep in mind that peptides are essentially mini proteins, which makes them food for organisms, and bac helps but isn’t flawless and doesn’t hold back every organism, including staph, which is common on skin and therefore everywhere)

 

[Mara_aa]

Labcat said:

Yes, that’s a smart move, because if contamination creeps in with each puncture, you won’t lose the entire batch that way. On top of that, I’d recommend running the liquid through a filter as you transfer it into the fresh sterile vial. My own routine is to always put my reconstituted peptide into new sterile vials or cartridges, filtering it during the process (a 13mm PES 0.2 microns syringe filter — you can even get one from Amazon — goes between the syringe and the needle, very easy). The reason is that sterility testing isn’t something we typically do. (Not many people fall ill or can link it back to bacteria from a vial, but I keep in mind that peptides are essentially mini proteins, which makes them food for organisms, and bac helps but isn’t flawless and doesn’t hold back every organism, including staph, which is common on skin and therefore everywhere)

Thanks for breaking that down, it clears things up for me. The idea that contamination can accumulate each time you puncture the vial hadn't crossed my mind. Running the solution through a filter as you move it into a fresh sterile vial seems like a sensible safeguard. Since I'm still quite inexperienced with all of this, I'll have to figure out how best to arrange it on my end, but I'm grateful for the guidance.

 

[Peotidethrowaway]

With 120mg tirz, that was my old approach: pen carts, then freezing one of them.

 

[Labcat]

Peotidethrowaway said:

With 120mg tirz, that was my old approach: pen carts, then freezing one of them.

I've had an interest in trying carts! Did freezing work out for you with carts? I've kept a few spent ones around for testing purposes, to check how air space influences things; I have some slight worries about the plug shifting backward, coming all the way out, or maybe introducing a bit of contamination by traveling across a non-sterile surface (it might be fine if the plug stays dry and doesn't travel far. So nothing gets drawn in via capillary action.)

 

[Labcat]

Mara_aa said:

Labcat said:

Yes, that’s a smart move, because if contamination creeps in with each puncture, you won’t lose the entire batch that way. On top of that, I’d recommend running the liquid through a filter as you transfer it into the fresh sterile vial. My own routine is to always put my reconstituted peptide into new sterile vials or cartridges, filtering it during the process (a 13mm PES 0.2 microns syringe filter — you can even get one from Amazon — goes between the syringe and the needle, very easy). The reason is that sterility testing isn’t something we typically do. (Not many people fall ill or can link it back to bacteria from a vial, but I keep in mind that peptides are essentially mini proteins, which makes them food for organisms, and bac helps but isn’t flawless and doesn’t hold back every organism, including staph, which is common on skin and therefore everywhere)

Thanks for breaking that down, it clears things up for me. The idea that contamination can accumulate each time you puncture the vial hadn't crossed my mind. Running the solution through a filter as you move it into a fresh sterile vial seems like a sensible safeguard. Since I'm still quite inexperienced with all of this, I'll have to figure out how best to arrange it on my end, but I'm grateful for the guidance.

You can post your questions in this thread, or send them to me privately.

 

[indolent]

Mara_aa said:

indolent said:

Mara_aa said:

Hi everyone,

If this has come up before, I apologize — I looked but nothing turned up, so sorry if I overlooked it.

I also want to be upfront: I already suspect this question may be a bit silly, but here it goes anyway.

I have a vial of Tirz that still needs reconstituting, and I'd like to divide the resulting solution into two vials, 50/50.

Can that be done without compromising sterility or integrity?

I'd really appreciate any input on sterility, handling, or anything else.

Thanks a lot!

The term for this is an aliquot. Because of sterility concerns, I stay far away from doing it — even if whoever sells the empty vial says it's "sterile." That said, a lot of knowledgeable folks in this space do it anyway.

Personally, what I do (alongside other off-label practices) is continue drawing from a refrigerated vial of reconstituted tirzepatide for as long as 3 months. The condition for that is swabbing the stopper with alcohol diligently each and every time, recon included. It also requires bacteriostatic water ... genuine stuff (Pfizer Hospira), or from one of a very small number of group buy orgs that run testing on theirs. Finding it in Europe is difficult, I realize.



I'm also fine with freezing reconstituted vials and then thawing them to start the 3 months of use.

Your mileage may vary ... as you read and learn more, you have to decide your own risk tolerance.

Thanks for offering your view — it means a lot to me. The worries about sterility make total sense to me.

Since I'm still getting the hang of this, I'll need to give serious thought to which method feels right for me.

One thing I'm wondering about: you mentioned freezing the mixed vial and thawing it out before beginning the 3-month period — in your experience, does the potency hold up nicely that way?

I'm truly thankful for everything folks here are willing to teach.

Indeed, and this was confirmed through group testing [for tirzepatide... every peptide has its own characteristics. A comparable test with reta did show slightly more degradation, though not enough to make the approach unworkable.]

Look at post #100 here: /community-link/post/128833/

 

[Mara_aa]

Peotidethrowaway said:

With 120mg tirz, that was my old approach: pen carts, then freezing one of them.

Oh, that's genuinely useful information, thanks for telling me how it went for you. I'm still at the very beginning of figuring all this out and picking things up one piece at a time, so the perspective means a lot.

 

[Mara_aa]

indolent said:

Mara_aa said:

indolent said:

Mara_aa said:

Hi everyone,

If this has come up before, I apologize — I looked but nothing turned up, so sorry if I overlooked it.

I also want to be upfront: I already suspect this question may be a bit silly, but here it goes anyway.

I have a vial of Tirz that still needs reconstituting, and I'd like to divide the resulting solution into two vials, 50/50.

Can that be done without compromising sterility or integrity?

I'd really appreciate any input on sterility, handling, or anything else.

Thanks a lot!

The term for this is an aliquot. Because of sterility concerns, I stay far away from doing it — even if whoever sells the empty vial says it's "sterile." That said, a lot of knowledgeable folks in this space do it anyway.

Personally, what I do (alongside other off-label practices) is continue drawing from a refrigerated vial of reconstituted tirzepatide for as long as 3 months. The condition for that is swabbing the stopper with alcohol diligently each and every time, recon included. It also requires bacteriostatic water ... genuine stuff (Pfizer Hospira), or from one of a very small number of group buy orgs that run testing on theirs. Finding it in Europe is difficult, I realize.



I'm also fine with freezing reconstituted vials and then thawing them to start the 3 months of use.

Your mileage may vary ... as you read and learn more, you have to decide your own risk tolerance.

Thanks for offering your view — it means a lot to me. The worries about sterility make total sense to me.

Since I'm still getting the hang of this, I'll need to give serious thought to which method feels right for me.

One thing I'm wondering about: you mentioned freezing the mixed vial and thawing it out before beginning the 3-month period — in your experience, does the potency hold up nicely that way?

I'm truly thankful for everything folks here are willing to teach.

Indeed, and this was confirmed through group testing [for tirzepatide... every peptide has its own characteristics. A comparable test with reta did show slightly more degradation, though not enough to make the approach unworkable.]

Look at post #100 here: /community-link/post/128833/

That's quite intriguing, and I'm grateful you shared that. Knowing it was genuinely confirmed through a group test makes it feel much more reassuring. I truly value the insight.

 

[Labcat]

indolent said:

Mara_aa said:

indolent said:

Mara_aa said:

Hi everyone,

If this has come up before, I apologize — I looked but nothing turned up, so sorry if I overlooked it.

I also want to be upfront: I already suspect this question may be a bit silly, but here it goes anyway.

I have a vial of Tirz that still needs reconstituting, and I'd like to divide the resulting solution into two vials, 50/50.

Can that be done without compromising sterility or integrity?

I'd really appreciate any input on sterility, handling, or anything else.

Thanks a lot!

The term for this is an aliquot. Because of sterility concerns, I stay far away from doing it — even if whoever sells the empty vial says it's "sterile." That said, a lot of knowledgeable folks in this space do it anyway.

Personally, what I do (alongside other off-label practices) is continue drawing from a refrigerated vial of reconstituted tirzepatide for as long as 3 months. The condition for that is swabbing the stopper with alcohol diligently each and every time, recon included. It also requires bacteriostatic water ... genuine stuff (Pfizer Hospira), or from one of a very small number of group buy orgs that run testing on theirs. Finding it in Europe is difficult, I realize.



I'm also fine with freezing reconstituted vials and then thawing them to start the 3 months of use.

Your mileage may vary ... as you read and learn more, you have to decide your own risk tolerance.

Thanks for offering your view — it means a lot to me. The worries about sterility make total sense to me.

Since I'm still getting the hang of this, I'll need to give serious thought to which method feels right for me.

One thing I'm wondering about: you mentioned freezing the mixed vial and thawing it out before beginning the 3-month period — in your experience, does the potency hold up nicely that way?

I'm truly thankful for everything folks here are willing to teach.

Indeed, and this was confirmed through group testing [for tirzepatide... every peptide has its own characteristics. A comparable test with reta did show slightly more degradation, though not enough to make the approach unworkable.]

Look at post #100 here: /community-link/post/128833/

My reading of it matches yours as well.

 

[skeptick]

Labcat said:

Peotidethrowaway said:

With 120mg tirz, that was my old approach: pen carts, then freezing one of them.

I've had an interest in trying carts! Did freezing work out for you with carts? I've kept a few spent ones around for testing purposes, to check how air space influences things; I have some slight worries about the plug shifting backward, coming all the way out, or maybe introducing a bit of contamination by traveling across a non-sterile surface (it might be fine if the plug stays dry and doesn't travel far. So nothing gets drawn in via capillary action.)

With a vent needle in place, the plug stays put entirely. That said, there's no problem if the plug does shift, provided you keep an eye on it as it gets closer to the cartridge's open end... Want to know how I found that out...

 

[Dilbert4Life]

skeptick said:

Labcat said:

Peotidethrowaway said:

With 120mg tirz, that was my old approach: pen carts, then freezing one of them.

I've had an interest in trying carts! Did freezing work out for you with carts? I've kept a few spent ones around for testing purposes, to check how air space influences things; I have some slight worries about the plug shifting backward, coming all the way out, or maybe introducing a bit of contamination by traveling across a non-sterile surface (it might be fine if the plug stays dry and doesn't travel far. So nothing gets drawn in via capillary action.)

With a vent needle in place, the plug stays put entirely. That said, there's no problem if the plug does shift, provided you keep an eye on it as it gets closer to the cartridge's open end... Want to know how I found that out...

Are you referring to pulling all the air out of the cartridge with a vent needle prior to freezing? Essentially priming the cartridge.