Central to making a diagnosis of an immunologic implantation
dysfunction (IID) is a need for the appropriate interpretation of
Natural Killer Cell Activity (NKa). In this regard, one of the
commonest and most serious errors, is interpret the blood
concentration of natural killer cells as being relevant. Rather it is
the activity (toxicity) of NK cells that matters as mentioned. This
activity can best be measured using the blood, K-562 target cell test
(the gold standard). and/ o…