Bio-Rad Laboratories, Inc, launches the BioPlex 2200 25-OH Vitamin D kit for use with the company's BioPlex 2200 system. The assay offers a fully automated method for the quantitative measurement of total 25-hydroxyvitamin D in human serum. The BioPlex 2200 is a random access multiplex testing system, providing clinical laboratories the capability to rapidly process or multiplex multiple individual tests that are traditionally processed separately. It conserves patient sample volume, helps consolidate workstations, and simplifies workflow.