The Bocx stated: "So that you understand what this means, if a group of normal people have very different amounts of RECAF in blood, then you need a high cutoff value in order to eliminate all (or 95%) of the normals. However, if the value is very different from one individual to another but the value is pretty constant for that individual, then you do not use the average of all normal people, you use the average value for that person."
So if you use the specificity of RECAF to be 95% and if the sensitivity is between 85% and 90% as you have mentioned those numbers in the past, then a RECAF test is utterly worthless for up to 20% of the general population. That could be as high as 1 out of 5 people getting a RECAF test could be getting bum information.
