// QA PROTOCOLS
Quality & Testing
Every compound supplied by NeurixPeptideLab undergoes rigorous analytical testing. Our quality assurance program ensures that all products meet or exceed the stated purity specifications.
Analytical Testing Program
HPLC
High-Performance Liquid Chromatography for purity determination. All peptides tested with ≥99% purity threshold.
Mass Spectrometry
ESI-MS or MALDI-TOF for molecular weight confirmation and identity verification.
Amino Acid Analysis
Quantitative amino acid composition analysis for complex peptides to verify sequence integrity.
Endotoxin Testing
LAL testing available upon request for compounds requiring endotoxin-free certification.
Water Content
Karl Fischer titration for moisture content determination where applicable.
Appearance & Solubility
Visual inspection and solubility testing per compound-specific specifications.
Certificate of Analysis (COA)
Every lot of every compound is accompanied by a Certificate of Analysis that includes:
- ✓ Lot number and manufacturing date
- ✓ Purity determination (HPLC)
- ✓ Molecular weight confirmation (MS)
- ✓ Chromatogram data
- ✓ Appearance and physical characterization
- ✓ Storage recommendations
Safety Data Sheets (SDS)
GHS-compliant Safety Data Sheets are maintained for every product in our catalog. SDS documents include hazard identification, composition data, first-aid measures, fire-fighting measures, handling and storage guidelines, exposure controls, physical and chemical properties, stability and reactivity data, toxicological information, and disposal considerations.
Storage & Handling Standards
All compounds are stored and shipped according to their specific stability requirements:
−20°C Storage
Standard for lyophilized peptides
Desiccated
Moisture-free storage conditions
Light Protected
Amber vials where required
Third-Party Test Results (COA)
Independent analytical testing performed by Janoshik Analytical. Click any report below to view the full test results in this lab results section.
Tirzepatide
Tested by Janoshik Analytical
Retatrutide
Tested by Janoshik Analytical
BPC-157
Tested by Janoshik Analytical
TB-500
Tested by Janoshik Analytical
Tesamorelin
Tested by Janoshik Analytical
SS-31 (Elamipretide)
Tested by Janoshik Analytical
MOTS-c
Tested by Janoshik Analytical
Pending COA Uploads
Third-party test results for the following compounds are pending upload. COA documents will be published here as they become available.