Peptidology and COA validation
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Recently I found that Peptidology has introduced a 14-way testing that included TFA and Sterility. Since TFA remnants is a big problem that is for the most part ignored, I got impressed, and made a couple purchases from them.
The COAs they provide are per batch and made by Eagle Analytical Services (Sterility) and Vanguard Laboratory (the rest).
I decided to see if COA (for KLOW blend) from Vanguard can be verified on their website. They have a search, https://verifiedbyvanguard.com/search but the COA I was looking for
Issued for: Peptidology Laboratory ID: V260427-22 005 Date Reported: 5/11/2026 Lot Number: 1674did not come up. Moreover, Peptidology was not listed among the vendors there at all.
I tried to email them by the email they provide there for the requests. I got
Address not found Your message wasn't delivered to [email protected] because the address couldn't be found, or is unable to receive mail.It didn't look good. I found another email
[email protected], resent it there - got no response, and a few days have passed.I tried to ask at Peptidology chat, they answered
You can verify the COAs directly with Vanguard Laboratory by contacting them via email.I sent Peptidology an email explaining that I couldn't contact Vanguard. They did not respond either for a few days.
I asked Peptidology again about how I could verify, they answeredPlease call Vanguard: https://vanguardlaboratory.com/contact/I filled out that Vanguard contact form - no response.
I sent another email to peptidology, asking if they could facilitate it somehow, they answered
The COAs we provide are supplied by the testing laboratory; however, if you would like independent verification of a specific report, you would need to contact Vanguard Laboratory directly. We do not typically receive requests of this nature, as most customers conduct their own research and due diligence regarding laboratory reports. Unfortunately, we are unable to facilitate or manage communications between customers and the laboratory. Any verification of a report's authenticity would need to come directly from Vanguard Laboratory.I sent yet another letter to Vanguard and they finally responded:
This matches a COA we have on file for Peptidology issued for lab ID #: V260427-22 005.I am glad that I finally know that at least the report is legit. I think however that I've made too much efforts to find out something that was supposed to be an easy check. It took me 4 days to check it.
Also, I don't understand, why the labs can't just digitally sign they COA PDFs with a private key so the file would be verifiable? Aren't we living in 21st century?
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Recently I found that Peptidology has introduced a 14-way testing that included TFA and Sterility. Since TFA remnants is a big problem that is for the most part ignored, I got impressed, and made a couple purchases from them.
The COAs they provide are per batch and made by Eagle Analytical Services (Sterility) and Vanguard Laboratory (the rest).
I decided to see if COA (for KLOW blend) from Vanguard can be verified on their website. They have a search, https://verifiedbyvanguard.com/search but the COA I was looking for
Issued for: Peptidology Laboratory ID: V260427-22 005 Date Reported: 5/11/2026 Lot Number: 1674did not come up. Moreover, Peptidology was not listed among the vendors there at all.
I tried to email them by the email they provide there for the requests. I got
Address not found Your message wasn't delivered to [email protected] because the address couldn't be found, or is unable to receive mail.It didn't look good. I found another email
[email protected], resent it there - got no response, and a few days have passed.I tried to ask at Peptidology chat, they answered
You can verify the COAs directly with Vanguard Laboratory by contacting them via email.I sent Peptidology an email explaining that I couldn't contact Vanguard. They did not respond either for a few days.
I asked Peptidology again about how I could verify, they answeredPlease call Vanguard: https://vanguardlaboratory.com/contact/I filled out that Vanguard contact form - no response.
I sent another email to peptidology, asking if they could facilitate it somehow, they answered
The COAs we provide are supplied by the testing laboratory; however, if you would like independent verification of a specific report, you would need to contact Vanguard Laboratory directly. We do not typically receive requests of this nature, as most customers conduct their own research and due diligence regarding laboratory reports. Unfortunately, we are unable to facilitate or manage communications between customers and the laboratory. Any verification of a report's authenticity would need to come directly from Vanguard Laboratory.I sent yet another letter to Vanguard and they finally responded:
This matches a COA we have on file for Peptidology issued for lab ID #: V260427-22 005.I am glad that I finally know that at least the report is legit. I think however that I've made too much efforts to find out something that was supposed to be an easy check. It took me 4 days to check it.
Also, I don't understand, why the labs can't just digitally sign they COA PDFs with a private key so the file would be verifiable? Aren't we living in 21st century?
@vpeptides That's very surprising. I had done a cross check with Vanguard many months ago when I was considering a new vendor without community vetting and Vanguard replied quite quickly within a couple of business days.
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@vpeptides That's very surprising. I had done a cross check with Vanguard many months ago when I was considering a new vendor without community vetting and Vanguard replied quite quickly within a couple of business days.
@pep_researcher Perhaps I didn't have enough patience, if I waited another day they could've responded. They responded to my third letter though. Maybe it's a vacation time there. I got kind of suspicious because of a bad email and a missing report in their database.
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@pep_researcher Perhaps I didn't have enough patience, if I waited another day they could've responded. They responded to my third letter though. Maybe it's a vacation time there. I got kind of suspicious because of a bad email and a missing report in their database.
@vpeptides I don't recall their exact response timeline, but I didn't send reminders.
You have every right to doubt and cross verify every vendor, but in my experience, Peptidology is the best in class when it comes to testing and batch management scrupulousness.
Josh, the owner, is a gem. Honest and maintains high standards. I have bought from them multiple times and even pivoted some of my friends entering RUO to them, before they learn to vet COAs and vendors themselves.
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@vpeptides I don't recall their exact response timeline, but I didn't send reminders.
You have every right to doubt and cross verify every vendor, but in my experience, Peptidology is the best in class when it comes to testing and batch management scrupulousness.
Josh, the owner, is a gem. Honest and maintains high standards. I have bought from them multiple times and even pivoted some of my friends entering RUO to them, before they learn to vet COAs and vendors themselves.
@pep_researcher Josh actually wrote me a polite email, explaining that they are not yet signed up with Vanguard's online verification, because they're very busy doing business, and that would require them to manually add and verify hundreds of backlogged COA from years past, so for now I would have to use Vanguard's phone number and email address to inquire for individual certificate verifications.
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@pep_researcher Josh actually wrote me a polite email, explaining that they are not yet signed up with Vanguard's online verification, because they're very busy doing business, and that would require them to manually add and verify hundreds of backlogged COA from years past, so for now I would have to use Vanguard's phone number and email address to inquire for individual certificate verifications.
@vpeptides Yeah he's one of the best in this space.
Once my order had some slight problem, nothing major. Their standard customer care replied in a kind of dismissive manner and I didn't push either. But I think Josh closely monitors customer support messages. He read the exchange and proactively took care of it. I would definitely pay more for that kind of service and integrity.
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