Flow cytometry is only as good as the sample it sees.

Between collection and acquisition, platelet and leukocyte samples change — and published data consistently point the same direction: the sooner a sample is stabilized after collection, the more accurately it reflects the donor's true in vivo state. Platelets activate spontaneously ex vivo. Leukocyte surface antigens degrade. Transport, processing delays, and batching can all affect what is actually present in the sample when it reaches the analyzer.

IntelliFlow™ stabilizes samples post-collection. Up to 7 days at room temperature or 2–8°C for the Platelet Stabilization Tube, PST (CD62P); up to 22 days for the Leukocyte Stabilization Tube, LST (lymphocyte subsets) — the first 7 days at room temperature, then refrigerated at 2–8°C.

Pre-filled vacuum tube requires no pipetting, no reagent preparation, and minimal training. Closed system — no open reagent handling. Stabilizing the sample and protecting the person handling it are not separate problems — the same closed, pre-filled design addresses both.