Where are we getting Tesamorelin these days?
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I have a kit of of 97.6% Jano tested vendor COA coming this week. Its going back out to Jano for testing.
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@denti Yeah - instead of changing labs they did something very smart with the first batch they had at 97% - they got a second opinion. They sent the same batch out to a second lab and made that data public. The second lab clocked them in at higher purity.
The reason that was smart is in a transparent honest way it implies that when you are looking at other labs 99%+ numbers for Tesa maybe you should think twice.
I also noticed they went right back to using just Janoshik for subsequent batches, probably meaning they don't quite trust the alt lab numbers either.
I am now tempted to pick up some 99%+ Tesa from some vendors who supposedly lyophilize themselves and send those to Janoshik and see what it comes back as. Can narrow it down to if this really is a Nexaph issue, or if every lab is just flat out inaccurate.
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If anyone ever comes across a 99%+ Tesa COA from any vendor after these changes, please do post about it here.
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So I have this bridge for sale. Great deal anybody looking for one let me know.
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@denti FWIW my last 2 orders from Genpeptide were 99% via Chromate. Not sure if they still have that purity on their site though.
@uxu if you look at all the blips there are impurities they are filtering and just assigning the purity to the main peak. I am no expert I sent this to someone who is. I am paraphrasing what was told to me. Many labs do this because they have no reference standards. They are expensive to purchase. He also said he doubts that large peak is histidine because of the smaller peaks next to do it and the dips
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Yuansense Techs last two batches July and August were Jano tested at 98.2% approx. Their previous batches from April were at 99.7% Janoshik tested.
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@denti FWIW my last 2 orders from Genpeptide were 99% via Chromate. Not sure if they still have that purity on their site though.
@denti FWIW my last 2 orders from Genpeptide were 99% via Chromate. Not sure if they still have that purity on their site though.
Yes nearly ALL vendors are selling 99%+ when its tested with any lab that is not Janoshik. We are now coming to realize that all of these labs are giving us inaccurate purity on Tesa testing. Seems like the only ones providing accurate purity testing now specifically for Tesa is Janoshik. My guess is if you take your vial that was tested by Chromate at 99% and sent it to Janoshik it will come back less than 99%. Almost a certain at this point. Probably in the 97% range.
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Yuansense Techs last two batches July and August were Jano tested at 98.2% approx. Their previous batches from April were at 99.7% Janoshik tested.
Yuansense Techs last two batches July and August were Jano tested at 98.2% approx. Their previous batches from April were at 99.7% Janoshik tested.
So basically Janoshik now has the most accurate/best reference material or whatever you want to call it and everyone else is still using less than and that's why they all put up 99%+ numbers.
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Yuansense Techs last two batches July and August were Jano tested at 98.2% approx. Their previous batches from April were at 99.7% Janoshik tested.
So basically Janoshik now has the most accurate/best reference material or whatever you want to call it and everyone else is still using less than and that's why they all put up 99%+ numbers.
@denti Looks that way. The Janoshik Tesa samples prior to this Summer were all over 99% same as all the other labs. Appears that Jano was the first lab to get (or order) up to date Tesa reference standards.
Now I think Yuansense Techs’ Tesa at 98.2% looks pretty darn good compared to the majority of other recent purity samples I’ve seen from Janoshik.
I do have an order from their 2026/7 batch on the way…. -
@denti FWIW my last 2 orders from Genpeptide were 99% via Chromate. Not sure if they still have that purity on their site though.
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If anyone ever comes across a 99%+ Tesa COA from any vendor after these changes, please do post about it here.
@denti Peptidology uses Vanguard and has been having Tesa at 99% on COAs. Just FYI.
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@denti Peptidology uses Vanguard and has been having Tesa at 99% on COAs. Just FYI.
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@denti A lot of places don't post failed results so I wouldnt be surprised if peptidology also has a number of failed coas that were never made public
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