Table 3.

Passing Bablok analysis and Spearman rank correlation between the different assays

Method X	Method Y	n	Passing Bablok regression equation	Spearman rank correlation coefficient	p-value
Calprest	QB BM	37	y=2.39x–19	0.91	<0.001
Calprest	Phadia EliA	24	y=1.67x–80	0.70	<0.001
Calprest	Calprolab	29	y=2.91x–108	0.85	<0.001
Calprest	Calfast	27	y=0.76x+19	0.82	<0.001
Calfast	QB BM	31	y=5.37x–266	0.69	<0.001
Calfast	Phadia EliA	26	y= 1.66x–71	0.65	<0.001
Calfast	Calprolab	31	y=4.85x–227	0.75	<0.001
Calprolab	QB BM	33	y=1.12x+51	0.93	<0.001
Calprolab	Phadia EliA	32	y=0.31x+6	0.65	<0.001
QB BM	Phadia EliA	28	y= 0.34x–15	0.77	<0.001

n, number of samples available for regression analysis (results within measurement range of both tests); QB BM, Quantum Blue Bühlmann