Table 1. Analytical parameters of the LC-MRM-MS and ECL immunoassay platforms.

Method	Analyte	LLOQ (μg/ml)	Accuracy (%)	Precision (%)	Range (μg/ml)	Development time	Analysis throughput
LC-MRM-MS	Casirivimab	20	95–103	3–13	20–2000	Shorter	Lower
	Imdevimab	10	96–106	3–9	10–2000
ECL immunoassay	Casirivimab	0.156	93–103	7–11	0.156–10	Longer	Higher
	Imdevimab	0.156	94–103	8–10	0.156–10