TABLE 2.

Overall summary results of estimates, with 95% confidence limits, for samples A to D (IgG) in terms of U.S. lot 3 (for anti-PT and anti-FHA) and U.S. lot 4 (for anti-PRN)^a

Antibody and assay	Estimates as units of U.S. references under sample code:				Estimates for B and C as equivalent ml of A and D	Estimates for B and C in terms of Ab	Proposed IU for A and D (06/140 and 06/146)
	A (06/140)	D (06/146)	B (06/142)	C (06/144)
IgG anti-PT ELISA	340 (315-368) [22]	331 (320-363) [22]	108 (100-117) [22]	105 (94-118) [22]	0.32 (0.30-0.34) [22]	106 (100-113) [22]	335
IgG anti-PT CHO cell assay	307 (140-677) [3]d		96 (49-185) [3]e		0.31 (0.08-1.25) [3]	NAc	NA
IgG anti-FHA ELISA	131 (120-142) [18]	129 (121-137) [18]	123 (116-131) [18]	120 (111-130) [18]	0.94 (0.89-0.99) [18]	122 (116-128) [18]	130
IgG anti-PRN ELISA	65 (58-72) [16]	64 (59-70) [16]	39 (35-44) [16]	38 (34-43) [16]	0.60 (0.57-0.63) [16]	39 (37-41) [16]	65

^aValues are overall GM estimates of the laboratory GMs. The 95% confidence limits are given in parentheses. The numbers of estimates (one estimate per laboratory) combined are indicated in brackets.

^bUsing proposed IU for sample A.

^cNA, not applicable.

^dOverall GM for samples A and D.

^eOverall GM for samples B and C.