Caltag Medsystems

Caltag Medsystems is a private UK life science tools company that distributes diagnostic and research reagents and also manufactures cell-stabilisation products for flow cytometry and related laboratory workflows. The company serves research, clinical, and diagnostic customers with a broad catalog spanning antibodies, assays, recombinant proteins, biological samples, DNA/RNA tools, and consumables. Its best-known proprietary product franchise is TransFix, a sample stabilisation reagent used to preserve cellular specimens for downstream analysis. Caltag operates from Buckingham, United Kingdom, holds ISO 13485 certification, and also distributes in vitro diagnostic reagents and human tissue and cell products. The business appears to be primarily a commercial supplier and manufacturer rather than a therapeutic drug developer.