FAQ
What is the final harvest passage of the mesenchymal stem cells (MSCs) administered to patients?
The final harvest typically occurs between Passage 3 (P3) and Passage 4 (P4), with most clinical administrations completed at P3.
Do you track population doublings in addition to passage number?
Yes. Population doublings are monitored alongside passage numbers as part of our internal quality and consistency controls.
When it is stated that cells are “passed no more than three times,” what does that mean clinically?
This means the final product administered to the patient is harvested at Passage 3 (P3). Cells are not expanded beyond this stage for treatment.
