Assessment of proteolytic degradation of the basement membrane: a fragment of type IV collagen as a biochemical marker for liver fibrosis

Table 2 Inter- and intraassay variation for the CO4-MMP assays using human serum quality control samples^a

CO4-MMP sample	Amount, ng/mL	Intraassay variability, %	Interassay variability, %
HS1	28.64	5.2	16.3
HS2	35.24	6.7	13.5
HS3	39.29	5.9	11.1
HS4	42.54	4.6	9.6
HS5	47.12	4.7	15.0
HS6	51.94	2.9	12.6
HS7	51.77	2.9	14.1
HS8	48.93	5.1	11.2
Mean		4.8	12.1

^aCO4-MMP = 1438'GTPSVDHGFL'1447; The variation was calculated as the mean variation of ten individual determinations for each sample.

ISSN: 1755-1536