The N-WASP phospho-regulation antibody sampler kit can be used to examine phosphorylation of N-WASP at Tyr-256 and Ser-484/Ser-485. For the latter site, phosphorylated relative to unphosphorylated Ser-484/Ser-485 can be monitored. In addition, the conserved sites in WASP (Tyr-291 and Ser-483/Ser-484) can also be examined. The kit includes polyclonal antibodies to monitor total expression levels of N-WASP and WASP.