Table 4.

Intra- and inter day precision and relative errors (accuracy) for alfentanil and midazolam.

	Alfentanil			Midazolam
	Concentration (ng/ml)
	1	10	100	1.35	12	100
Intraday run 1-mean	0.98	9.67	102.7	1.36	10.6	103
SD	0.04	0.77	5.6	0.11	0.5	7
%CV	4.1	8.0	5.4	8.1	5.1	7.2
% RE	-2.0	-3.3	2.7	0.7	-11.3	2.9
Intraday run 2-mean	0.99	9.88	97.1	1.39	12.0	102
SD	0.05	0.42	3.2	0.09	0.6	6
%CV	5.1	4.3	3.3	6.5	5.3	5.4
% RE	-1.0	-1.2	-2.9	3.0	-0.2	2.3
Intraday run 3-mean	0.98	9.83	97.0	1.32	12.2	105
SD	0.05	0.61	2.8	0.05	0.7	4
%CV	5.1	6.2	2.9	3.8	6.0	3.7
% RE	-2.0	-1.7	-3.0	-2.2	1.8	4.6
Interday run-mean	0.98	9.79	98.9	1.36	11.6	103
SD	0.04	0.59	4.7	0.09	0.9	5
%CV	4.1	6.0	4.7	6.6	8.0	5.3
% RE	-2.0	-2.1	-1.1	0.7	-3.3	3.3
N	18	18	18	18	18	18