Please note that CMV IgG will be in arbitrary Abbott units, EBV IgM will be a Sample/Cut-off ratio" - I'm unsure if that information will be adequate for telling me whether the levels are high. I'm unfamiliar with "abbot units" or if there will be anyway for me to tell what is considered high by looking at it.
I think that should be adequate to determine whether your antibodies are high.
I have not heard of Abbott units before, but some of my viral antibody tests are given as an index number, with the units of AU/ml. So maybe AU = Abbott unit.
Usually with antibody tests, the lab report will state your
antibody level, and also state the
reference level for a negative result.
For example, on the cytomegalovirus IgG antibody test I took in London, my results were:
Positive 206.8 AU/ml
< 6.0 AU/ml non-reactive
So this number 6 AU/ml tells you that if your results are 6 or above, you are positive, but if below 6 then you are negative.
Then to see how high you are above the reference level for negative, you divide the
antibody level by the
reference level for negative, like this: 206.8 / 6 = 34. So this gives me a ratio of 34.
So my cytomegalovirus antibody levels are 34 times higher than the reference for negative, which is high.
There is no precise figure for what constitutes high, but I explain
here in my roadmap that having an antibody level about ≥16 times higher than the reference for negative might be considered high.
For the EBV test, he is going to provide you with the ratio: Sample/Cut-off. The
sample means your antibody level, and the
cut-off means the reference level for a negative result.
So he is going to do the exact division for you that I did above, namely dividing
antibody level by the
reference level for negative. So if the EBV ratio figure he gives you is around 16 or above, then that might be considered high.