Current Protocols is issuing corrections for the following protocol article: Selliah, N., Nash, V., Eck, S., Green, C., Oldaker, T., Stewart, J., Vitaliti, A., & Litwin, V. (2023). Flow cytometry method validation protocols. Current Protocols, 3, e868. doi: 10.1002/cpz1.868 In the above-referenced article: In both equation 4 and equation 6: The “mean/SD” has been changed to: “SD/mean” The current version online now includes these corrections and may be considered the authoritative version of record.