We tested peptide degradation so people can stop guessing
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Don’t do this…
Take the vial out, draw your dose into your syringe, put the vial back in the fridge. Let the syringe and peptide warm up@Commander how do you do that with a pen
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@matthewwalsh I inject cold all the time; I don’t care. I don’t think there is any more discomfort than at room temperature, or, again, I don’t care. If that is a concern, do what I do for my bride’s rat(she has concierge service!) and draw the syringe, letting that get to room temperature while the vial is back in the fridge.
Be wary using AI for this. It’s mostly scraping all the other web sites and posters, which are all either repeating one source(e.g. bac water goes bad after 28 days) or are aggregating made up stuff that isn’t verified.
I am not saying it isn’t useful, but I am using AI for work and it’s just great when you ask it to summarize regulatory requirements for financial derivatives and it makes up answers when it can’t find what you’re looking for.
@ResearchCat, I tried to say this for Peptides AI is absolutely useless. Maybe for protocols, but people saying Claude said XYZ please, people don't rely on these posts.
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@commander yeah they're useless unless you are the lab tech.
@kj4otu asked for the raw results after not reading the original post saying what the dilutant was. Believe the data or don't. ...or better yet spend 5k on tests and do it yourself
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@Commander how do you do that with a pen
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Don’t do this…
Take the vial out, draw your dose into your syringe, put the vial back in the fridge. Let the syringe and peptide warm upDon’t do this…
Take the vial out, draw your dose into your syringe, put the vial back in the fridge. Let the syringe and peptide warm upOr have a week's worth of peptides already drawn up and ready to go, so you're just fetching a syringe and pinning all week. This way you're only fumbling with that vial once a week.
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Don’t do this…
Take the vial out, draw your dose into your syringe, put the vial back in the fridge. Let the syringe and peptide warm upOr have a week's worth of peptides already drawn up and ready to go, so you're just fetching a syringe and pinning all week. This way you're only fumbling with that vial once a week.
@Neil-McCauley
That is a good idea…
I can’t use vials every day, I need the pens
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@phiberopttic I hope you have many years to wait for the results.
Peptide Crafters did 3 month testing on Lyophilized BPC fridge v room temp, no difference. They also did 12 month test on room temp Tirz... 12 months! 0 change.
I've been wondering if its even worth freezer-ing my vials. Ahh, can't hurt. And it's so nice to have everything in those little inserts in the insulated food jars.
Sources:
Lyophilized Stability – Peptide Crafters.pdf Lyophilized Stability of BPC – Peptide Crafters.pdf@SuperSaiyajin-31 so, I bought my first 10 vial kit of 10 mg tirzepatide - I left it at room temperature for a month. I thought it was okay to do that. Are you saying that they ran tests and it didn't make a difference? It's in the fridge now.
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If you have lyophilized peptides that will be used in the next year or so, they are probably fine being stored in a dark, cool place. If you want to put them in the fridge, that is fine too, but it is much more important to refrigerate once reconstituted.
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@SuperSaiyajin-31 so, I bought my first 10 vial kit of 10 mg tirzepatide - I left it at room temperature for a month. I thought it was okay to do that. Are you saying that they ran tests and it didn't make a difference? It's in the fridge now.
@kristal Yes, you can see the whole test done in the pdf i attached in the original post. One batch, two vials. One vial sent out and tested on 5 Nov 2024. The other vial sat around for a year "stored at room temperature in a dry, light
protected environment" and was tested 5 Dec 2025. Results were within margin of error = no degradation.Your peptides probably sat on the warehouse shelf longer than that in China anyways.
Your peptides are fine.
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@kristal Yes, you can see the whole test done in the pdf i attached in the original post. One batch, two vials. One vial sent out and tested on 5 Nov 2024. The other vial sat around for a year "stored at room temperature in a dry, light
protected environment" and was tested 5 Dec 2025. Results were within margin of error = no degradation.Your peptides probably sat on the warehouse shelf longer than that in China anyways.
Your peptides are fine.
@SuperSaiyajin-31 yea! It was my first kit. Not the last though!
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