Analytical and Clinical Evaluation of a Chemiluminescent Immunoassay to Detect Serum Chitinase-3-like Protein 1 in HBV-Related Liver Diseases

Table 4

Evaluation of precision.

Level	Mean (ng/mL)	Intraassay precision		Interassay precision		Total precision
		SD	CV (%)	SD	CV (%)	SD	CV (%)
Level 1	19.73	0.36	1.81	1.53	7.76	1.56	7.91
Level 2	85.27	2.35	2.76	1.37	1.61	2.46	2.88

SD, standard deviation; CV, coefficient of variation. CV (%) = (SD/mean) × 100%.