TABLE 6.

Results of native sample analysis (n = 100).

Contamination level (CFU/g), 0 h	Cultural positive	groEL LAMP	groEL qPCR	nheB LAMP	nheB qPCR	MALDI +
>100–101	12	1	1	0	2	12
101–102	1	0	0	0	0	1
102–103	1	1	1	0	0	1
103–104	2	2	2	0	1	2
104–105	0	0	0	0	0	0
105–106	1	1	0	0	0	1
Total positive:	17	5	4	0	3	17*
Add. false positive:	–	0	0	0	2
Contamination level (CFU/g), 6 h	Cultural positive	groEL LAMP	groEL qPCR	nheB LAMP	nheB qPCR	MALDI +
>100–101	6	0	2	0	1	6
101–102	0	0	0	0	0	0
102–103	8	2	2	0	1	8
103–104	20	5	6	2	6	20
104–105	10	7	5	1	5	10
105–106	2	2	1	2	1	2
Total positive:	46	16	16	5	14	46**
Add. false positive:	–	0	1	0	5

*1 isolate of B. thuringiensis, **2 isolates of B. thuringiensis, gray, critical value (from 105 CFU/g food).