Sigma Diagnostics

Sigma Diagnostics was a prominent clinical diagnostics business, originally a division of the life science giant Sigma-Aldrich, specializing in in vitro diagnostic (IVD) reagents and systems. The company was a major player in the clinical chemistry, coagulation, and hematology markets, providing high-quality testing kits to hospital and reference laboratories worldwide. In 2000, the business was acquired by Trinity Biotech for approximately $51 million, which integrated Sigma's extensive product line into its own diagnostics portfolio. This acquisition allowed Trinity Biotech to significantly expand its presence in the United States and global diagnostics markets. Today, the legacy of Sigma Diagnostics lives on through the continued production and sale of its reagents under the Trinity Biotech brand.