[Evaluation of a colorimetric enzymatic procedure for determining the total bile acids in the blood]. / Valutazione di un procedimento enzimatico colorimetrico per la determinazione degli acidi biliari totali del siero.

A simple enzymatic colorimetric procedure for the total serum bile acids determination was evaluated. In 518 normal patients values of statistical analysis ranged from 0.60 to 7.75 mumol/l (mean = 3.38 and S.D. = 2.00).

[Reference values of serum creatinine measured automatically by the Jaffé fixed-time reaction]. / Valori di riferimento della creatininemia valutati per via automatica mediante la reazione "fixed time" di Jaffe.

1077 serum samples collected from patients of both sexes showing values of creatininemia less than or equal to 1.4 mg/dl as evaluated by the enzymatic colorimetric method (Wako reagents, Cobas Fara analyzer) have been processed using 430 Selective Analyzer Sclavo. Test for imprecision and inaccuracy within-run and between-day (40) showing very low values (less than 3%) of variation and bias coefficients, preliminarily demonstrated the reliability of the automatic fixed time Jaffé's reaction. Statistical analysis gives these values: means = 0.66 mg/dl, deviation standard (DS) = 0.20 mg/dl, means + 2 DS = 1.06 mg/dl, in good agreement with data provided by the enzymatic procedure.