TABLE 6.

Optimization of internal positive control (IPC) concentration

No. of copies of L. pneumophila dotA	Ct with IPC and dotA probes at the indicated no. of IPC copies:
	390		39		0
	IPC	dotA	IPC	dotA	IPC	dotA
1,000	35.41	30.83	37.55	30.87		30.68
100	36.22	34.22	36.17	32.79		32.67
10	34.05	36.69	35.59	36.38		35.11
0	34.24		34.48