Table 2.

Comparison of agreement between pairs of assays for results of the food samples (2nd study). Correlation: Pearson’s r values. Values of r that are above 0.8 are in bold. Quantitative and qualitative agreement: without any correction (No corr), after mathematical recalibration (Mat rec) and after correction with BME-IGRM material (BME-IGRM). Quantitative agreement: average between-assay RSD_ba in%. Qualitative agreement: number of identical statements produced by the two methods with regards to the gluten content (gluten-free, low gluten, contains gluten) per number of measured samples (in %).

Correlation[Pearson’s r]	AllerTek			Agraquant			Biomedal			Rbiopharm			Transia			Morinaga
Neogen	0.96			0.72			0.73			0.61			0.87			0.30
AllerTek				0.62			0.59			0.55			0.78			0.25
Agraquant							0.77			0.88			0.91			0.66
Biomedal										0.81			0.95			0.25
Rbiopharm													0.85			0.87
Transia																0.66
Quantitative agreement RSDba [%]	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM
Neogen	120	11	13	57	31	43	79	38	62	98	39	61	108	35	49	118	40	61
AllerTek				96	34	44	69	33	60	57	37	58	49	32	50	54	38	57
Agraquant							48	28	48	80	29	34	91	22	31	110	32	36
Biomedal										46	25	31	57	22	64	87	33	41
Rbiopharm													22	20	39	55	27	29
Transia																48	26	44
Qualitative agreement [%]	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM	No corr	Mat rec	BME-IGRM
Neogen	0	94	78	78	67	44	28	83	33	6	78	39	6	83	56	0	61	39
AllerTek				0	61	44	39	78	28	78	72	28	78	78	44	61	56	28
Agraquant							50	72	67	0	89	83	0	83	67	0	61	61
Biomedal										50	83	83	50	89	67	33	78	61
Rbiopharm													100	94	83	72	72	78
Transia																72	78	72