Every batch of our research peptides undergoes independent third-party analytical testing at Freedom Diagnostics, an accredited laboratory specializing in HPLC (High-Performance Liquid Chromatography) coupled with Mass Spectrometry. Each Certificate of Analysis below is searchable on FreedomDiagnosticsTesting.com using its accession number.
All compounds shown are confirmed at 99%+ purity with passing endotoxin results per USP <85> guidelines. These products are for laboratory research use only — not for human or veterinary use.
| Compound |
Test |
Result |
Batch |
Date |
| Retatrutide |
HPLC-MS Purity Analysis |
99.466% |
2601300009 |
Feb 1, 2026 |
| Retatrutide |
Endotoxin Analysis (USP <85>) |
Pass / Pass |
2601300010 |
Feb 1, 2026 |
| Tirzepatide |
HPLC-MS Purity + Endotoxin |
99.745% |
2603270017 |
Mar 29, 2026 |
| Tirzepatide |
Endotoxin Analysis (USP <85>) |
Pass / Pass |
2603270018 |
Mar 29, 2026 |
| NAD+ 100mg |
HPLC-MS Purity Analysis |
99.795% |
2603270019 |
Mar 29, 2026 |
| GHK-Cu 50mg |
HPLC-MS Purity Analysis |
99.9% |
2603270020 |
Mar 29, 2026 |
| BPC-157 10mg |
HPLC-MS Purity Analysis |
99.04% |
2601300011 |
Feb 1, 2026 |
Retatrutide
HPLC-MS Purity Analysis
99.466%
Purity
Batch: 2601300009
Issued: Feb 1, 2026
Lab: Freedom Diagnostics
Chemist: Stephen Schmidt
Batch: 2601300010
Issued: Feb 1, 2026
Lab: Freedom Diagnostics
Chemist: Stephen Schmidt
Batch: 2603270017
Issued: Mar 29, 2026
Lab: Freedom Diagnostics
Chemist: Alex Johnson
Batch: 2603270018
Issued: Mar 29, 2026
Lab: Freedom Diagnostics
Chemist: Alex Johnson
NAD+ 100mg
HPLC-MS Purity Analysis
99.795%
Purity
Batch: 2603270019
Issued: Mar 29, 2026
Lab: Freedom Diagnostics
Chemist: Alex Johnson
GHK-Cu 50mg
HPLC-MS Purity Analysis
99.9%
Purity
Batch: 2603270020
Issued: Mar 29, 2026
Lab: Freedom Diagnostics
Chemist: Alex Johnson
BPC-157 10mg
HPLC-MS Purity Analysis
99.04%
Purity
Batch: 2601300011
Issued: Feb 1, 2026
Lab: Freedom Diagnostics
Chemist: Stephen Schmidt
Frequently Asked Questions
Who performs the analytical testing?
Freedom Diagnostics, an independent laboratory specializing in HPLC coupled with mass spectrometry. Testing is not performed in-house, and supplier-provided purity claims are never used in place of independent analysis.
What is an accession number and how is it used?
The accession number is the laboratory's own reference for a submitted sample. Each certificate on this page carries one, and it can be searched on FreedomDiagnosticsTesting.com to confirm the report against the laboratory's records.
What does the endotoxin result mean?
Endotoxin screening is performed against USP <85> guidelines and reported as a pass or fail for the batch. It is a separate assay from the HPLC-MS purity analysis, which is why some batches carry two certificates rather than one.
Why do purity figures differ slightly between batches?
Purity is measured per batch rather than assumed from a specification, so results vary within the passing range. Each vial is documented by the certificate issued for its own lot, not by an average across production.
How to interpret the analytical methods behind these reports
The certificates published above are generated by two distinct kinds of analysis. Each one answers a narrow question well and is silent on the others. Knowing which question a method actually answers is what makes a certificate useful rather than decorative.
What each method on these certificates establishes, and what it leaves open.| Method | What it establishes | What it does not establish |
|---|
| Reversed-phase HPLC | Separates the sample by relative hydrophobicity and reports the target peak as a percentage of total detected peak area. This is the source of a purity figure. | It does not confirm what the peak is. A single sharp peak is consistent with a pure compound but does not by itself name the compound. |
|---|
| Mass spectrometry | Measures mass-to-charge of the separated species so an observed molecular mass can be compared against the mass calculated from the intended sequence. This is the identity confirmation. | It does not quantify how much of the sample is the target. Identity confirmation and purity quantification are separate outputs of the same run. |
|---|
| Endotoxin screening, USP <85> | Tests the batch for bacterial endotoxin against a compendial procedure and reports the outcome as a pass or fail for that lot. | A pass is a result against a defined limit, not a claim of zero endotoxin, and it says nothing about chemical purity or identity. |
|---|
Terms that appear on these certificates
| Term | Meaning |
|---|
| Chromatogram | The detector trace produced as the separated sample elutes from the column over the course of the run. |
|---|
| Retention time | How long a given species takes to travel through the column under the stated conditions. Comparable retention behavior under matched conditions is one part of a consistency check. |
|---|
| Peak area | The integrated area beneath a peak on the trace, used as the quantitative basis for a relative purity figure. |
|---|
| Area percent | One peak's area expressed as a share of the summed area of all detected peaks in the run. |
|---|
| Compendial method | A published, standardized procedure. USP <85> is the compendial reference cited for the endotoxin results shown above. |
|---|
The scope of what a report covers
An analytical report describes the sample the laboratory received, drawn from the lot named on the report, under the conditions stated on the report. It is not a rolling guarantee. Anything that happens to material after release, including transit, storage temperature, and handling in the receiving laboratory, sits outside the boundary of the assay and is the responsibility of whoever holds the material at that point.
All compounds listed on this page are supplied strictly for in-vitro laboratory research. Nothing here is intended for human or veterinary use, and no result on a certificate should be read as a safety or efficacy statement.
