The analyzes carried out in our laboratory are participated in PT / ILC programs for the purpose of verification. The z score is taken into account when evaluating the PT / LAK results.

Z score rating:

│Z│ ≤ 2 Successful Performance; analysis is suitable

  2 <│Z│ <3 Questionable Performance; the analysis can be accepted but the problem has to be examined

│Z│ ≥ 3 Failed Performance; analysis is not accepted, corrective action should be applied.