Table 5: Precision analysis for IgG products and intermediates.

Sample

IgG level
[mg/mL]

Intra-assay precision

Inter-assay precision

Mean
[mU/mL]

RSD
[%]

Mean
[mU/mL]

RSD
[%]

GG-SD

50

64.7

6.2

69.2

9.2

GGL

100

184

3.9

188

4.1

CUV

200

254

5.8

257

5.3

Plasma pool

5

N/D

N/D

951

5.2

Extract II+III

≈ 7

N/D

N/D

845

4.6

Filtrate II+III

≈ 4

N/D

N/D

19.5

8.8

PptG

50

N/D

N/D

158

6.6

Remarks: Intra- and inter-assay precision (repeatability and intermediate precision) was determined by six repetitions in one run, carried out by one operator, and by repetitions in six independent runs, carried out by three operators.