Table 5.

Bias and bias percentage (%) among assays at the level of medical decision

	Supporting calibrator	Bias	Bias (%)	Using 847 U/L recalibration	Bias	Bias (%)
A	y = 1.02x − 0.78 (R² = 0.999)	13.78	1.89	y = 0.95x + 25.08 (R² = 0.991)	−11	1.55
B	y = 0.49x − 4.89 (R² = 0.988)	−376	−51.67	y = 0.98x + 0.93 (R² = 0.993)	−14	−1.87
C	y = 1.00x + 63.0 (R² = 0.996)	63	8.65	y = 0.79x + 84.08 (R² = 0.953)	−69	−9.45

	Supporting calibrator	Bias	Bias (%)	Using 442 U/L recalibration	Bias	Bias (%)
A	y = 1.11x − 5.27 (R 2 = 0.999)	75	10.28	y = 0.999x + 3.26 (R² = 0.999)	−3	−0.35
B	y = 0.48x + 6.5 (R² = 0.998)	−372	−51.11	y = 0.98x + 15.92 (R² = 0.998)	−1.36	−0.19
C	y = 0.88x + 127.03 (R 2 = 0.996)	40	5.50	y = 0.85x + 130.87 (R² = 0.996)	22	2.97

A, B, and C represent comparisons between Evermed and Diasys, Evermed and Hengxiao, and Evermed and Zybio, respectively.