EN 14126 is a material test that proves that the fabric has a barrier to biological disease. It contains 5 different tests, which determine resistance to penetration by blood, body fluids, liquid aerosol, etc.
You can first identify EN14126: 2003 certification via wording “-B” behind “TYPE” classification, such as “TYPE 3-B”, “TYPE 4-B” and “TYPE 5-B”.
ISO 16603
Resistance to penetration by blood/body fluids
ISO 16604
Resistance to penetration by blood-borne pathogens