New immunoassay kits are available that are designed for compatibility with Gyros’ Gyrolab workstation. The kits are intended to aid in biotherapeutic development and production. The two new kits have been developed to test for impurities, namely host cell proteins from CHO and E. coli. Scientists optimizing purification processes and working in process control, routine QC, and product-release testing may benefit from these ready-to-use kits.