Overview +

All Sanguine study protocols and their resulting samples, which include all Sanguine at-home and apheresis collection programs, are conducted under an Institutional Review Board (IRB). Sanguine operates under an electronic informed consent process which executes 21 CFR part 11 compliant e-signatures, and Sanguine systems interacting with study participant information are HIPAA-compliant.

Sanguine’s CD19+ B cells from healthy donors offer a reliable source for research on antibody production, vaccine development, and immune system regulation. Isolated from healthy donors, these high-purity B cells support studies on humoral immunity and therapeutic advancements in immunology. CD19+ B cells are collected by negative selection from fresh cells by labeling with antibody complexes and magnetically separated. CD19+ cells are aliquoted and stored using CryoStor® CS10 freezing media.

Infectious disease testing requirements differ globally. If you are ordering from outside the U.S., please reach out at to confirm that we can meet your country’s regulatory and documentation needs.