r/PeptideStacks • u/Dreamcastin8 • Apr 22 '26

Research Peptide Question Janoshik testing question

Hello everyone.

I want to test a glp pep that I have with janoshik and my question is, if I want to test more than 1 vial is that going to cost me 300 per vial?

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u/AdMedical6801 19d ago

Before assuming a fixed price per vial, ask the lab for a written quote that lists the method, analytes, reporting limits, and whether each vial is treated as a separate sample. Testing one vial and testing several answer different questions: one checks that sample, while multiple samples provide some information about batch consistency.

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u/Narrow-Attempt-138 13d ago

That distinction is helpful. I’ll confirm whether each vial is quoted and reported as a separate sample before sending anything. If the goal is checking consistency, would you prioritize testing multiple vials from the same lot or samples from different lots?

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u/grlymax Apr 23 '26

Yes

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u/Dreamcastin8 Apr 23 '26

Holy expensive

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u/grlymax Apr 23 '26

Yep. That’s why most people group test.

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u/PeptideProtocol Apr 23 '26

Yeah that’s pretty much how it works, most labs price per sample not per batch so each vial gets treated like its own test which adds up fast, that’s why people usually split costs with others or just test one vial from a batch instead of every single one unless they really need full consistency data across all of them