How to Qualify a Recombinant Protein Supplier for Your Lab
Purity by HPLC/SDS-PAGE, endotoxin, lot-to-lot consistency, CoA and cold-chain shipping — the checklist university labs should run before reordering.
The checklist
Purity by HPLC and SDS-PAGE, endotoxin level, lot-to-lot consistency, expression system, tag and carrier status, and a CoA you can file for your institution. Then: shipping temperature, customs documentation and a supplier who answers technical questions quickly.
Why it matters more than price
In assay development a silent lot shift or endotoxin contamination can waste weeks of work. The cheapest protein without documentation is usually the most expensive decision in the lab.
Qualify once, reorder with confidence
Run a side-by-side evaluation against your current batch, record the tested lot number, then reorder the validated lot rather than re-qualifying from scratch.
Related materials
Human Recombinant Soluble ST2 (sST2 / IL1RL1) →Recombinant Cardiac Troponin I (cTnI) →TRIS Base and TRIS-HCl, High-Purity Biological Buffer →Request a Quote or Sample
Tell us your application, target purity and quantity — we reply within one business day.