Research / Quality
Quality & Testing
Analytical testing and documentation are the foundation of every material we supply. Here is what we test, how results are documented, and how to verify your lot.
Retrieve documentation by lot number
Enter the lot number printed on your vial or packing slip. Matching records show the testing laboratory, test date, reported purity and the Certificate of Analysis.
What we test
Tests are performed by independent laboratories. The COA for each lot lists exactly which analyses were run; tests marked "when applicable" depend on the material and form.
Identity testing
Confirms the material is the expected compound by comparing measured and theoretical molecular mass.
HPLC purity analysis
High-performance liquid chromatography separates the compound from impurities and reports purity as a percentage of total peak area.
Mass spectrometry
LC-MS or MALDI-TOF confirms molecular weight and helps characterize related impurities.
Residual solvents (when applicable)
Screens for solvents remaining from synthesis and purification.
Endotoxin (when applicable)
LAL-based testing for bacterial endotoxins where relevant to the material.
Sterility (when applicable)
Sterility information is provided for solutions such as bacteriostatic water.
Batch & lot tracking
Every unit carries a lot number that links it to its source batch and test records.
Third-party documentation
COAs are issued by the testing laboratory, not by GoldElite, for independent verification.
COA availability
Certificates are published in our COA Database and linked from each product page.
From receipt to release
Receipt
Incoming material is logged and assigned a lot number.
Sampling
Samples are sent to an independent laboratory for analysis.
Review
Results are checked against specification before release.
Publication
The COA is published and linked to the lot number.
Trust Center
The standards and policies behind every order.
Quality standards
Materials are released only when third-party results meet specification. Specifications and results appear on each COA.
Testing procedures
Identity by mass spectrometry and purity by HPLC as standard; additional tests where applicable to the material.
Supplier qualification
Synthesis partners are selected on documentation quality, consistency between lots and responsiveness to quality queries.
Batch traceability
Lot numbers connect each unit to its batch, test records and shipment.
Documentation
COAs are kept on file and remain available for every lot we have supplied.
Data integrity
COAs are published as issued by the laboratory, without modification.
Research-use policy
All materials are sold for laboratory research only. We do not provide dosing guidance or make health claims. Read the policy.
Shipping standards
Discreet, protective packaging with tracking on every order. Shipping policy.
Storage information
Store lyophilized peptides sealed, dry and protected from light; −20 °C for long-term storage. Follow the COA and label for your lot.
Customer support
Questions about documentation or orders are answered within 24 hours. Contact support.