TABLE 1.

Dynamic range test for the dead cell/viable cell ratio of L. monocytogenes with the PMA-PCR assay

Dead cell density (log10 CFU/ml)	CT value with a viable cell density ofa:							R2
	8 log10 CFU/ml	7 log10 CFU/ml	6 log10 CFU/ml	5 log10 CFU/ml	4 log10 CFU/ml	3 log10 CFU/ml	2 log10 CFU/ml
0	12.85 ± 0.07	16.03 ± 0.14	19.78 ± 0.12	23.19 ± 0.35	25.38 ± 0.81	28.57 ± 0.14	30.69 ± 1.98	0.9952
3	12.83 ± 0.17	16.02 ± 0.26	19.17 ± 0.52	22.95 ± 0.17	25.12 ± 0.17	28.22 ± 0.39	29.65 ± 1.62	0.9964
4	12.77 ± 0.33	16.42 ± 0.42	19.33 ± 0.21	23.19 ± 0.43	25.42 ± 0.53	29.01 ± 0.85	29.24 ± 2.30	0.9967
5	12.74 ± 0.38	15.68 ± 0.33	18.94 ± 0.28	22.64 ± 0.32	24.99 ± 0.70	28.32 ± 0.84	29.68 ± 2.89	0.9978
6	12.56 ± 0.27	15.68 ± 0.45	18.91 ± 0.31	23.06 ± 0.60	25.28 ± 0.56	28.47 ± 0.98	30.02 ± 1.74	0.9953
7	12.57 ± 0.36	15.56 ± 0.28	19.09 ± 0.34	22.32 ± 0.47	24.26 ± 0.82	25.79 ± 1.34	27.75 ± 1.82	0.9918
8	12.58 ± 0.32	15.26 ± 0.52	18.08 ± 0.35	21.05 ± 0.76	23.34 ± 0.46	24.28 ± 1.24	24.38 ± 1.91	0.9986

^aThe boldface values were outliers and were not included in the linear regression analysis.