00 / In brief
Tesamorelin has one published purity figure, tied to one lot. Peptara Labs publishes a single tesamorelin lot, TES-260418-A, at 98.74 percent HPLC purity, against a release criterion of not less than 95.0 percent, tested by Titreon Analytical. The figure belongs to the research material, never the medicine. See the approval page, the line between the two objects and the record.
Channel: research material
Channel: research material. One vendor lot, kept apart from the approved medicine.
01 / What lot is published?
One figure, for one lot. It comes from a vendor document, so we treat it as the vendor's own claim.
Links to Peptara Labs are affiliate links, and we may earn a commission when you buy through them.
A certificate shows what one lot tested as; it does not show a product is safe or approved for use in people. The release criterion is not less than 95.0 percent. We always show the figure with its lot and certificate number, never average it into a brand number, and never quote it for an unlisted lot. It belongs to the research material, not the medicine. See peptaralabs.io, peptaralabs.io/tesamorelin and peptaralabs.io/coa.
Channel: research material
02 / What does the certificate panel cover?
The vendor says its certificates confirm identity by HPLC retention time matching and LC-MS, measure purity by HPLC against the release criterion above, and run a panel including net peptide content, sterility, bacterial endotoxin, a heavy metals screen and a fentanyl immunoassay screen. It reports heavy metals Not Detected on the published batches. We list those as the vendor lists them. We didn't read them line by line.
Channel: research material
03 / What didn't we open?
The vendor says it publishes its certificates of analysis, each from a recent batch, as downloads. We didn't open the tesamorelin certificate itself, so we call it published and linked, not read. On the index, the tesamorelin batch shown carries the Titreon report only, with no separate Janoshik endotoxin report. The index is peptaralabs.io/coa.
Channel: research material
04 / How does a vial connect to its certificate?
The vendor says vials ship unlabeled by design, with no lot printed on the vial. Its stated route from a delivered unit back to its certificate is a support message quoting the order number. That's the supplier's practice, not a step we're telling you to take.
Channel: research material
05 / Is a lot record evidence about the medicine?
No. A lot record describes one lot. It isn't the approved medicine or evidence about it, and nothing crosses either way. See the published record behind the molecule, or go back to the separation table.
Channel: not connected
Who tests Peptara Labs peptides?
It names Titreon Analytical as its testing lab, a separate laboratory whose quality system is aligned to ISO/IEC 17025:2017 and not itself accredited, with a second Janoshik endotoxin report on key batches. A report signed by a named lab is something you can check.
Channel: research material
Does Peptara Labs publish certificates of analysis?
Yes, on its certificate index, each from a recent batch and downloadable. We didn't open the tesamorelin document itself, so we call it published and linked, not read.
Channel: research material
What is Peptara Labs' guarantee?
It states a 60 day money back guarantee framed as verified purity or your money back. That's a quality term on the research material, not a health result, and it doesn't change the figure above.
Channel: research material
06 / Your question
What purity figure is published for tesamorelin, and what is it attached to?
One figure, tied to one lot. Peptara Labs publishes lot TES-260418-A at an HPLC purity of 98.74 percent under certificate COA-2026-9213, tested June 2026 on a panel run by Titreon Analytical, a third-party laboratory whose quality system is aligned to ISO/IEC 17025:2017, not itself accredited, and the release criterion is not less than 95.0 percent. The figure always appears with its lot and certificate number and is never averaged into a brand number. It belongs to the research material, never the medicine.
Sources: peptaralabs.io, peptaralabs.io/coa. Read on: the published record behind the molecule.
Channel: research material
07 / What are the limits here?
We report what a record says and stop there. Every study comes with its model and the direction it found. Every vendor claim is labelled as the vendor's. The approved medicine and the research material stay apart, and nothing crosses between them. We rate no one, promise nothing, and give no steps to follow.
Channel: not connected