TABLE 2.

Performance of the MWP-AM and Cobas-AM

Sample no.	Input HBV DNA (copies/ml)	MWP-AM		Cobas-AM
		Meana	CV (%)b	Meana	CV (%)b
2	100	0	NAf	241 (290)c	112
3	200	67 (400)d	254	311	57
4	400	253 (507)e	119	675	33
5	825	833	43	1,738	16
6	1,650	1,620	27	2,993	23
7	3,300	3,107	94	6,135	22
8	6,600	7,233	11	9,658	16
9	13,300	15,593	12	19,733	12
10	26,500	22,787	8.5	36,750	6.5
11	53,000	39,060	16	66,500	17
12	106,000	66,107	19	111,167	7.6
13	212,000	151,827	14	171,667	11

^aMean of six analyses (duplicate analyses performed on 3 consecutive days), with nonreactive results set as 0 copies/ml; mean for reactive results only is given within parentheses). 

^bNonreactive results set as 0 copies/ml. 

^cOne of six analyses yielded nonreactive results. 

^dFive of six analyses yielded nonreactive results. 

^eThree of six analyses yielded nonreactive results. 

^fNA, not applicable.