PON1 and alkaline phosphatase measurement: Despite the fact that the PON(P) activity in the blood AP patients with the TT genotype was not changed in comparison to the patients with the TC genotype, a decrease was shown in the activity of PON1(A) and PON1(L) during hospitalization of AP patients with the TT genotype, which can confirm the influence of this genotype on the decreased activity of PON1.