Table 5.

Determination of the analytical limit of detection of C. perfringens on mCP agar and by the CRENAME + cpa rtPCR procedure

C. perfringens count (CFU/100 ml)		WGA rtPCR (presence/absence for each replicate)
Estimated	On mCP agar
300	329	+	+	+
150	154	+	+	+
75	74	+	+	+
25	24	+	+	+
12	12	+	+	+
5	4	+	+	+
2	2	+	+	−
1	1	+	−	−
0.5	0	+	−	−
0.1	0	−	−	−
Negative control	0	−	−	−