Cells need to be more than alive after thawing

In PBMC cryopreservation, post-thaw viability is important — but it does not always tell the full story. 

 A more practical question is: 

Can thawed PBMCs remain usable, dispersible, and aggregation-free during real post-thaw handling? 

 Recently, we evaluated CS-PM-D1 PBMC Cryopreservation Medium under a practical lab scenario: PBMC samples were held at 2–8°C for 30 minutes after thawing before the next processing step. 

 To better reflect real workflow variability, the evaluation included three independent PBMC samples and four washing buffer conditions: basal medium, medium with factors, compound electrolyte solution, and normal saline. 

 The results were encouraging: 

✔ No visible flocculent formation immediately after thawing 

✔ No obvious PBMC aggregation after 30 minutes at 2–8°C 

✔ Stable suspension performance across all four washing buffer conditions 

✔ Culture medium-based washing supported better viability and recovery consistency 

 For us, this case reinforces one key point: 

PBMC cryopreservation should not only be evaluated by a single viability number, but by whether cells remain usable for what comes next — washing, centrifugation, culture, analysis, or downstream cell processing. 

 At CellStore, we continue to develop cryopreservation media around real workflow needs, supporting both cell survival and post-thaw usability in sensitive cell applications. 

 Because sometimes, the real value of a cryopreservation medium is not only helping cells survive freezing. 

It is helping them stay ready for the next step.