Comparison of VIDAS and Radioimmunoassay Methods for Measurement of Cortisol Concentration in Bovine Serum

Table 1

Comparison of results obtained using the VIDAS and RIA methods for serum cortisol determination in 40 cows.

Cortisol concentration (nmol/L)
Method	Mean	SD	Mean 95%; Confidence interval	Median	Minimum	Maximum
VIDAS	21.8	24.45	5.37–38.23	95.2	5	628.6
RIA	13.05	12.6	4.56–21.55	83.65	6.9	577.3