How Elyria Bio tests its peptides.
The release standard for every lot, as a numbered policy: the purity floor (≥99% HPLC purity), how identity is confirmed, what “Report Only” means, what happens to a lot that does not pass, and what each laboratory tests. The laboratories themselves, with the lots each has tested, are on the laboratories page.
1. Purity floor
Every lot is held to a ≥99% HPLC purity floor before release; lots below the floor are rejected.
The floor is ours. It is stricter than the specification either laboratory sets (≥95.0% at ILS Laboratories and 98% at BTLabs), and it is never presented as a laboratory’s finding: the figure that describes a lot is the one on its certificate. Today’s lowest released purity is 99.02% (certificate reference 050575, GLP-3).
2. Identity
Identity is confirmed by the method named on the lot's certificate. The laboratory chooses the method and prints it on the certificate; we publish it as printed.
- ILS Laboratories: Purity is measured by RP-HPLC and identity by HPLC retention time vs. reference standard.
- BTLabs: Purity is measured by HPLC and identity by FTIR (USP <197A>).
3. What “Report Only” means
“Report Only” on a certificate means the laboratory reports a measured value against no acceptance range. It is a measurement, not a pass, and we publish it as printed without describing it as meeting a limit. On our lots it is the specification printed for net peptide content at ILS Laboratories. ILS Laboratories also marks bacterial endotoxins as reported rather than passed. BTLabs prints a range for net peptide content; we publish the range and the reported content as the certificate prints them.
Net peptide content is not part of our release standard, which is the purity floor and the identity method above. It is published as reported, beside the range or the Report Only note the certificate prints.
4. When a lot does not pass
A lot that falls below the purity floor is rejected and is not released. A certificate is published on a product page only for a lot that has been tested and released; where none is published, the page says so in plain words (“No certificate of analysis is published for this product.”).
The Kisspeptin page is the current example. Its certificate section says: “Every batch will be third-party tested before release. Testing on this batch is complete and it passes. The laboratory is reissuing its certificate against the correct 5 mg fill weight, and it will be published on this page when it arrives.” and, under it, “No certificate of analysis is published for this product.” See the Kisspeptin page.
5. What is on each laboratory’s panel
The tests on a lot’s certificate depend on the laboratory, and we do not flatten the difference. This table is counted from the released lots; a test a certificate does not carry is named as not on it, never implied.
| Laboratory | Lots | Purity | Identity | Endotoxins | Sterility | Net peptide content | Endotoxin and sterility reported on |
|---|---|---|---|---|---|---|---|
| ILS Laboratories | 8 | 8 of 8 | 8 of 8 | 8 of 8 | 8 of 8 | 8 of 8 | The same certificate |
| BTLabs | 5 | 5 of 5 | 5 of 5 | 5 of 5 | 5 of 5 | 5 of 5 | Separate reports, each with its own report number |
6. What a certificate covers
A certificate describes the batch the laboratory’s sample was drawn from. Only certificate references 060656, 070915 and 060738 have a vial label printing a QR code to its certificate page; our vials are not individually lot-numbered, so a certificate cannot be matched to one individual vial, and nothing we publish says it can.
7. Research use only
Everything tested is sold strictly as an in-vitro laboratory research material. A result describes the material that was analysed; it is not a statement about any use, and nothing on this site is medical advice or a dosing recommendation.
Read the certificate behind a lot.
Every released lot’s certificate is published on its product page.