|
KMID : 0981820070270060414
|
|
Korean Journal of Laboratory Medicine
2007 Volume.27 No. 6 p.414 ~ p.419
|
|
|
Evaluation of Two Beta2-microglobulin Reagents by Turbidimetric Immunoassay
|
|
Park Kyung-Sun
Kang So-Young
Lee Woo-In
|
|
|
Abstract
|
|
|
Background: An increased level of beta2-microglobulin ( 2M) is seen in diseases such as lymphoproliferative diseases, renal diseases, solid tumors, liver diseases, certain viral infection, or chronic inflammatory diseases, etc. In this study, we evaluated a quantitative 2M assay for precision and linearity using an automated turbidimetric immunoassay (TIA) by Hitachi 7600-110 (Hitachi High Technologies Co., Japan). The TIA of 2M was compared with a chemiluminescent immunoassay (CLIA) by Immulite 2000 (Diagnostic Products Corporation, USA).
Methods: Two TIAs, the Hitachi 7600-110 with Roche reagent (Roche-TIA) and the Hitachi 7600-110 with HBI reagent (HBI-TIA), were evaluated for within-run precision, within-day precision, betweendays precision, and linearity. With 68 serum samples, two TIAs were compared with Immulite 2000 using DPC reagent (DPC-CLIA). These data were analyzed by Passing-Bablok analysis and Bland-Altman analysis.
Results: The coefficients of variation (CVs) of within-run precision, within-day precision, and between-days precision were less than 7% in all groups. The linearity tests of the two TIAs were maintained well (Roche-TIA: R2=0.9952; HBI-TIA: R2=0.9946). The comparison study indicated good correlations (Roche-TIA/DPC-CLIA: r=0.9738, y=0.9625x-0.0375; HBI-TIA/DPC-CLIA: r=0.9725, y=1.1000x-0.3100). In Bland-Altman analysis, less than 2SD differences were observed between the two groups.
Conclusion: Both Roche-TIA and HBI-TIA showed a good precision and excellent correlations with DPC-CLIA; therefore, TIA could be used in the routine laboratory to determine a quantitative analysis of 2M. (Korean J Lab Med 2007;27:414-9)
|
|
|
KEYWORD
|
|
|
Beta2-microglobulin, Turbidimetric immunoassay, Chemiluminescent immunoassay
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
  
|
|