Comprehensive immunophenotyping shows that BloodReady preserves the cell viability of major and rare immune cell populations in whole blood including: T Cells (CD3+), Helper T cells (CD4+), Cytotoxic T cells (CD8+), Regulatory T cells (CD25+ CD127-/dim), Gamma delta T cells (TCRγδ+), and Natural Killer T cells (CD56+). NK Cells (CD56+ CD16+), CD57+ NK cells, Early NK cells (CD56+ CD16-), and Mature NK cells (CD56+ CD16+). B Cells (CD19+), Transitional B cells (CD27- IgD+), Non-Switched B Cells (CD27+ IgD+), and Switched B cells (CD27+ IgD-). Innate Lymphoid Cells (ILC) (CD127+), ILCs CD2+ CD4+, and ILCs CD2+ CD4-. Monocytes (CD4+ HLA-DR-), Classical Monocytes (CD14+ CD16-), Intermediate Monocytes (CD14+ CD16+), and Non-Classical Monocytes (CD14- CD16+). Granulocytes (SSChi, CD15+ CD11b+ cells).