US
In the US, the National Institute of Justice (NIJ) has established a stab resistant body armor test standard (NIJ STD 0115.00), based on the work in the UK, which defines two threat types: spike and edged blade.
Manufacturers of body armor can voluntarily submit armor models for compliance testing through the National Law Enforcement and Corrections Technology Center in Rockville, MD. Through the program, manufacturers certify that their armor will defeat the specified threat at one of three threat levels. Threat levels 1, 2 and 3 are based on impact energies of 24-, 33- and 43-joules respectively.