TransFix is a patented cellular stabilization reagent that when added to whole blood, cerebrospinal fluid (CSF), bone marrow and fine needle aspirates, preserves cell surface antigens at room temperature for a minimum of 10 days. Without TransFix, stabilization whole blood samples only have a transportation and storage shelf life of 36 hours. Following stabilization with TransFix, samples can be stored for 10 days saving time and money. TransFix is capable of stabilizing a wide range of body fluids and tissue, including blood, cerebrospinal fluid and bone marrow from both human and animal origins. This enables immunological samples to be grouped and stored as well as transported safely.