Table 1.

Intra- and interassay variations of anti-gliadin antibody (AGA) peptide antibody assay.^*

Sample	IgA concentration (AU)	IgG concentration (AU)	IgA CV (%)	IgG CV (%)
Intra-assay variation
1	510·2	156·2	1·7	1·2
2	992·6	454·2	2·2	1·7
3	1169·4	1487·5	1·0	1·4
Interassay variation
4	129·5	847·2	3·9	2·3
5	170·8	423·3	3·1	3·5
6	224·7	278·1	3·1	3·6

^*The intra-assay variation was determined on three different peptide AGA IgA- and IgG-positive sera which were applied in quadruplicate at five different locations on a microtitre plate. The interassay variations were determined with three different peptide AGA IgA- and IgG-positive sera using triplicates for each sample on a microtitre plate in 10 identical assays on eight separate days.