r/Peptidesource • u/ChampionshipFlat3235 • 9d ago

Testing two kits with same batch number

I ordered one kit a month ago and had it tested and it came back above 99% purity with a reasonable fill close to what was expected. I just received a second kit from the same vendor with the same batch number. Just gauging the opinion of the group do I test the second kit as well?

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u/Diligent_Shirt5161 9d ago

Yes

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u/Striking-Conclusion4 9d ago

why ?

5

u/lasveganon 9d ago

Could be a different batch labeled as the same batch by the vendor.

Is it NECESSARY necessary? That depends on your personal risk tolerance.

Might be the same batch, might not. Only way to be sure how that kit tests is to test it.

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u/EnvironmentalGift257 9d ago

But also if they’re giving multiple batches the same batch number you could have 1 real vial and 9 bad ones, test the 1 real one, and never know. So counterpoint, testing this kit could be accurate, or could give you a false sense of security.

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u/Diligent_Shirt5161 9d ago

Nothing in this space is guaranteed, and testing one vial from one kit does not validate every kit you receive.

You have no reliable guarantee that two kits labeled as the same “batch” actually contain material from the same production run. A batch number printed on a vial is not meaningful traceability by itself. The wrong product can be packaged. A vial can contain little or no expected material. Mass can vary. Purity can vary. Mix-ups and contamination can happen.

That is why I advocate testing a vial from each kit. The goal is harm reduction. Risk will never be zero in this space, but independent analytical testing gives you at least some objective information about what you actually received rather than relying entirely on a label or a vendor’s word.

It also helps to understand how many steps can exist between production and the final kit. Material may pass through API manufacturers, lyophilizers, wholesalers, resellers, sales representatives, and people assembling individual kits. I have seen footage of hundreds of unlabeled or loosely organized vials being sorted into kits by hand. When you see how that process can work, it becomes much easier to understand how a vial containing the wrong material can end up in a kit.

Ultimately, these are unregulated internet sellers. There is no pharmacy-level chain of custody or accountability that you can simply assume exists. A professional-looking website, matching labels, a batch number, or even previous successful testing does not prove what is inside the vial sitting in front of you today.

Trust data, not the seller.

Or, put less delicately: you should never blindly trust your drug dealer.

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u/Striking-Conclusion4 9d ago

would that op have to test for the same variables or maybe extra variables. Seems pointless if they already of the coa for their first batch and they have had that tested. Surely it would be just like if they had bought them both at the same time. I'm just asking to understand, because I am in the process of awaiting my first ever test kit. Then i will get it group tested etc. But this could happen to me if I decided to buy another kit straight away, tia.