If you're a CAP accredited lab not only do you have to apply the 6 fundamentals of competency testing, you must apply them accross all "systems" in place. That is, you need to measure the 6 fundamentals for crossmatching, antibody screening and ID's, ABO/Rh typings, elutions, etc etc. In chemistry, you can do competency testing on all tests performed on one instrument, but you also need to have the 6 fundamentals checked for each different instrument, or system, used in the performance of a techs' normal job. Needless to say this means much more documentation to get it all done.