Where do the cells come from?
Ask for a named lab, a published process, a chain of custody, and material certificates on request.
- Lab name disclosed
- Cell type and source specified
- Quality control and release criteria
"Umbilical MSC from [named lab]. Release criteria include viability, identity, and sterility. COA available."
"Premium stem cells from a top lab."
No name, no criteria, no paper. Walk away.