What is third-party testing?
Third-party testing is analysis performed by an independent laboratory that has no stake in the sale of the material. The lab measures purity and net peptide content and issues a Certificate of Analysis under its own name.
The defining feature is independence: the entity reporting the result is not the entity selling the product, and the certificate identifies which lab did the work.
How does it differ from in-house grading?
Not all quality claims are equivalent. The distinction is who performed the measurement and whether it can be checked.
| In-house / unnamed claim | Independent third-party | |
|---|---|---|
| Who measures | The seller | An independent laboratory |
| Named on the COA | Often not | Yes — the lab is identified |
| Conflict of interest | Higher | Lower |
| Verifiable | Hard to confirm | Traceable to a named lab and batch |
Which laboratory tests each batch?
Every batch is tested by Freedom Diagnostics, an independent analytical laboratory in Franklin, Tennessee, and the Certificate of Analysis names it — no in-house grading and no unnamed sources. One lab tests every batch, so there is no rotating list to check.
What does each batch get tested for?
Independent testing covers the same two properties a complete Certificate of Analysis reports: purity and net peptide content.
- Purity — quantified by HPLC against the stated purity standard
- Net peptide content — quantified in milligrams against the labeled amount
- Batch traceability — results tied to a lot number that matches the vial