Table 2.

Total number of extractions and controls performed in laboratories A and B

Sample	Extractions			Successful extractions			Extraction controls			Positive extraction controls			PCR controls			Positive PCR controls
	A	B	Total	A	B	Total	A	B	Total	A	B	Total	A	B	Total	A	B	Total
MRS48	4	15	19	3	7	10	2	15	17	0	2	2	2	15	17	0	4	4
A555	4	4	8	2	4	6	2	4	6	0	1	1	2	4	6	0	0	0
M40	4	13	17	4	10	14	2	13	15	0	0	0	2	13	15	0	1	1