Pep differences between labs

[Chuxpeps]

So here's a general question, and I'm interested in other real-world experiences. I originally was buying single vials of Tirz from Glacier and had great success. I then purchased a full kit from Nexaph as my research subject was going to be on it for a while. After the first week on the new Tirz at the same dose, food noise was back with a vengeance, and hunger suppression was nonexistent. Both COAs were similar and contained pure product. So, and I know this is a bit of crystal-ball gazing, why would a peptide from different vendors show such a noticeable difference? I get that they are 2 different companies, but wouldn't the molecule remain the same? I guess I'm just surprised, given that the COAs were basically equivalent for the 2 vendors' peptides. I probably shouldn't be given this is a research space. What am I missing? Has anyone else experienced this when moving between vendors?

[WisGal64]

Fr@nkly speaking, sounds like a vial from your kit needs to be tested for accuracy of that CoA.

I’ve noticed differences between vendors but not to the point of both food and hunger being non existent

[Chuxpeps]

@WisGal64 Yep, this is what I was worried about. I've generally found that Nexaph is solid and the Jano COAs are on target, but it just feels off. Nonexistent may be a bit of an overstatement, but it is very, very noticeable.Thanks

[vpeptides]

You can send a vial to test for free to Finnrick Analytics

[MyB]

I recently switched from Nexaph to another vendors R3. Greater food noise suppression on the other vendor, compared to nexa. My batch of nexa had 9 tests that i averaged, and the other vendor had eight that i averaged.
My spouses rat sad they haven’t noticed a difference so I thought it was just me.

[vpeptides]

It also changes with time, the body adapts. I only use Lilly's Zepbound tirzepatide injections. First month 2.5 mg weekly made me lose all appetite and I lost 15 pounds in 2 months. But then, I've been taking it for 6 more months increasing the dose to 9 mg (I couldn't do more b/c of the side effects), and I didn't really lose a pound consistently.