Table 1.

Analytical imprecision of the Beckman Coulter Access procalcitonin (PCT) immunoassay.

Pools	Intra-Assay				Inter-Assay				Total
	n	Mean (µg/L)	SD (µg/L)	CV	n	Mean (µg/L)	SD (µg/L)	CV	CV
Pool low	20	0.29	0.01	1.8%	10	0.30	0.01	3.6%	4.0%
Pool medium	20	2.83	0.05	1.9%	10	2.85	0.07	2.4%	3.1%
Pool high	20	11.23	0.23	2.1%	10	10.92	0.41	3.7%	4.3%

SD, standard deviation; CV, coefficient of variation.