Has anyone bought from Peptronix Bio (PTB)?

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Was curious if anyone has any experience with this vendor. They've posted in the Vendor Connnections, which is where I found them.
 
The way I've looked at price/convenience with Uther is that, for example, I'm not seeing any testing groups on FPPG for WBS, so would one then have to try to gather a test group, along with the time/headache of organizing it. Many of the other China vendors seem to take a pretty long time shipping, add that time on top of trying to find testing.
I received my Uther order very quickly and there was already a testing group in place for what I ordered (MOTS-C), in addition to that he's been doing his own and they're coming in high and very consistent, and matching up with the 3rd party tests. Tirz 30 is $40 more than WBS, but a testing group would be at least that much per person, or much more individually, but we're talking $4 per vial more for Uther. SSA's Sema is $30 less than Uther, and from another person I know, they take a long time to ship.
Uther is right at double what I'm paying now. I understand though, that there are other factors that matter and that might justify at least some markup.
 
Uther is right at double what I'm paying now.
Double for what? Or are you referring only to GLPs?

For reta, Uther is almost twice what I paid, per mg:

Uther is $1.13 per mg for reta, for the R40 for $450. I paid 66 cents per mg, which is 42 percent less, and mine included group testing since it was a group buy.
 
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I also mean if you have a supplier you love, sending in a vial might be a good way to get them shut down
Please explain. How would sending a vial to anyone get the vendor shut down? If bad actors are looking for Pep vendors, they most certainly don't need me or my vials to find them. They could just place an order themselves.
 
Double for what? Or are you referring only to GLPs?

For reta, Uther is almost twice what I paid, per mg:

Uther is $1.13 per mg for reta, for the R40 for $450. I paid 66 cents per mg, which is 42 percent less, and mine included group testing since it was a group buy.
Yeah, I'm talking only GLPs... Thanks for clarifying. Elsewhere, Tirz is going for < .29 mg. if you buy the 2 kits of 40mg. for $230 (advertized on this site for "July Promotion"). Quite the deal if you can stomach the risk. For other Uther products/prices, do your homework...
 
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Double for what? Or are you referring only to GLPs?

For reta, Uther is almost twice what I paid, per mg:

Uther is $1.13 per mg for reta, for the R40 for $450. I paid 66 cents per mg, which is 42 percent less, and mine included group testing since it was a group buy.

Just paid $440 for tested r60, and $225 for tested r30. There's deals to be found. But uther is fast and well regarded- mine could very well take months to get here. 🤷‍♀️
 
Tested by whom? Independent 3p?

Group buys. So some people would not want to use their tests as they're vendor-adjacent, but both of those groups are well regarded, have decently long histories, and generally end up retested, anyway. So we get the vendor provided test, the test done by the GBO, and then there will probably be a true 3p test done shortly after arrival.
 
Tested by whom? Independent 3p?
I am so tempted to spring for the R60 for $370 but the lack of transparency, no batch numbers, question marks about age of product... all give me pause. It would be so easy, and profitable for a vendor to list traceable batch numbers. Then, individual batches wouldn't have to be tested over and over and buyers would have greater confidence in what they purchased.

There must be a reason that vendors don't use batch numbers and I suspect that one of them is that they are selling product that is 1 - 2 years old or older.

Think how business would explode if varifiable batch numbers were used, tested at Jano, confirmed by 1 - 2 third-party tests and then advertized with batch number, mass and purity. I cannot understand why vendors don't do this unless they have compelling reasons for selling untraceable batches (e.g., very old product).
 
There must be a reason that vendors don't use batch numbers and I suspect that one of them is that they are selling product that is 1 - 2 years old or older.
Wouldn't the purity be noticeablely lower then, assuming it wasn't frozen?

But yes the lack of batch numbers can only look sketchy.
 
Think how business would explode if varifiable batch numbers were used, tested at Jano, confirmed by 1 - 2 third-party tests and then advertized with batch number, mass and purity. I cannot understand why vendors don't do this unless they have compelling reasons for selling untraceable batches (e.g., very old product).
Business has already exploded without them needing to do much if any of that.

Many domestic vendors try to some degree, but for the Chinese their success in anything is most often accomplished by doing the absolute minimum possible. Then of course there are the domestic vendors who literally buy whatever leftovers and QC fails they can find and sell them backed up by a test report of cherry-picked vials that have zero relation to what they're selling.

Ultimately it's up to end users and cooperative groups to do truly independent testing, and that applies regardless if there is robust "batch" coding/tracking or not.
 
Business has already exploded without them needing to do much if any of that.

Many domestic vendors try to some degree, but for the Chinese their success in anything is most often accomplished by doing the absolute minimum possible. Then of course there are the domestic vendors who literally buy whatever leftovers and QC fails they can find and sell them backed up by a test report of cherry-picked vials that have zero relation to what they're selling.

Ultimately it's up to end users and cooperative groups to do truly independent testing, and that applies regardless if there is robust "batch" coding/tracking or not.
The Chinese already test their products so I'm not asking for anything more than to connect those tests to batch numbers that could then be tested and verified by others. This is no guarantee that a buyer gets the very same product but if the vendor is lying, they will get busted in short order when others test the numbered batch and get different (lesser) results.

Currently, there is no such thing as truly valid independent testing because one can never know whether a purchase came from the tested batch. Posted batch numbers would eliminate this guessing game. Could the vendor advertize and sell a batch and cherry-pick some vials to send to Jano? Of course, but they would get busted almost immediately when others test that exact same batch number.

Yes, Asian business has exploded. But, as evidenced by the numerous vendors peddling their products on this and other sites, there is still incredible competition and a simple web search will show many additional Chinese peptide sellers that haven't even made it to the states yet. Consequently, one vendor could literally destroy most of the others by using traceable and verifiable batch numbers.

I believe this will almost certainly happen going forward once we progress out of the "wild, wild west" stage of gray peptide sales we are currently in.
 
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Wouldn't the purity be noticeablely lower then, assuming it wasn't frozen?

But yes the lack of batch numbers can only look sketchy.
Yes the purity would be lower for older product, assuming deterioration has already started (which it may not have after 1 year). Indeed, that is often what we see in Jano reports.

Have a look... notice how poor test results are not evenly distributed across products or vendors (i.e., they are not random). Some vendors are habitual offenders of underweight product and deficient purity.

 
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Take a look at 4 different Jano tests for T60 Red Cap (Same vendor, different Mfg. dates). What can we know from these tests insofar as my batch if I purchased T60 Redcap from March - June 2025?

Nothing!

My batch may or may not be the same as any one of these. Moreover, even if I and my GB friends tested some of ours, there is still no way to know what we have for sure, how old it is, how long it's been sitting in a warehouse, etc.

https://janoshik.com/tests/61727-Tirzepatide_60mg_4NY7W3C31I8X March

https://janoshik.com/tests/63286-Tirzepatide_60mg_QJPIRQVBTQKX April

https://janoshik.com/tests/65398-Tirzepatide_60mg_7JR698YX8TZI May

https://janoshik.com/tests/70331-TR60Tirzepatide_60mg_LPB1IP5XT5FA June
 
🙂 !remind.me To ask your opinion about batch numbers in 6 months.

I'm only joking, but I'm not gonna hold my breath on any vendor implementing a batch numbering that can be trusted. Meso bros haven't even got that for steroids yet.

And the reason is because testing is by far the largest cost to the vendors. So everytime they can slide an extra 200 kits under another test they win big.
 
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