different lab measurements depend on the units they are measuring them in which can be different between different labs. 13-34 were the lab norms when i got tested in the cfs nk study. i was tested every 6 months heres my readings 33(after my first 12 months on famvir and was functioning at a good level), 6, 51(when on cycloferon), 1 and 2. Like i mentioned before they also measured nk bright cell function which was 4.32, 1, 1.95, .93, and 1, the normal ranges were 5-10. The dim cell readings were all in the normal range. This testing was done in a research study so i guess its not commonly available as say the nk function testing. In australia any nk function testing isnt available outside of research study?? In the US its obviously different.