How to choose a research compound supplier: 7 points
The quality of a laboratory result depends on the quality of the starting material. These seven points help evaluate a research compound supplier before placing an order.
1. A certificate of analysis for the lot
Ask for the COA of the lot you will receive, not a generic document for the product. The lot number on the report should match the one on the label.
2. The lab that signs the report
The COA should state which lab ran the analysis and on what date. A report issued by a lab independent of the seller carries more weight than an in-house one.
3. Purity and identity, both
A complete report includes HPLC purity and mass spectrometry identity. With only one of the two tests, the information is incomplete.
4. Measured content
Check that the report gives the amount measured per vial, not only the nominal amount on the label.
5. Stated origin
A serious supplier says where the product is made and where it ships from. That affects delivery times and transport conditions.
6. Traceability
Every vial should be traceable to its lot and its certificate. QR codes on the label and a public report portal make that check easy.
7. Stated use and support
Research compounds are sold for laboratory use only. Be wary of any seller that describes them otherwise. Also check that there is a support contact that answers questions about lots and reports.
How LA Peptides meets these points
LA Peptides products are made in the USA. Every vial carries a QR code that opens the COA for its lot in the COA Portal, and the reports show the lab and the date of the analysis.
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- Mass spectrometry: how a peptide's identity is confirmed
- How to verify a lot with the QR code on the vial
- Lyophilized peptides: what they are and how labs store them
- How to read a certificate of analysis (COA)
Open the COA Portal · Browse the catalog
All LA Peptides products are sold for laboratory research only. Not for human or veterinary use.