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Serum beta2-microglobulin values among healthy Brazilians using a DPC IMMULITE assay
Fabíola Branco Filippin1, Liliete Canes Souza
1Department of Clinical Analysis, Science and Health Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
Clinics (Sao Paulo, Brazil)
|April 20, 2005
Summary
Serum beta 2-microglobulin (Sb2M) levels in Brazil differ from European ranges. This study establishes a new normal range for Sb2M in Brazilians, crucial for accurate clinical diagnosis.
Area of Science:
- Clinical Chemistry
- Immunology
- Hematology
Background:
- Serum beta 2-microglobulin (Sb2M) is a biomarker for HIV infection and malignancies like multiple myeloma.
- Current Sb2M reference ranges are based on European populations, potentially limiting diagnostic accuracy in Brazil.
Purpose of the Study:
- To determine the normal range of serum beta 2-microglobulin (Sb2M) levels in a healthy Brazilian population.
- To establish an adequate reference interval for the Sb2M IMMULITE assay tailored for Brazilian individuals.
- To address the need for population-specific reference ranges in clinical diagnostics.
Main Methods:
- Evaluated 96 healthy blood donors in Brazil.
- Measured Sb2M levels using a chemiluminescent enzyme immunoassay on the IMMULITE automated analyzer.
Main Results:
- Established a normal Sb2M range of 1.05 to 3.9 mg/mL using nonparametric statistical methods.
- The upper limit of the normal range in Brazil was found to be higher than previously reported elsewhere.
Conclusions:
- Significant differences exist between established European reference limits for Sb2M and those found in the Brazilian population.
- Population-specific reference ranges for Sb2M are essential for accurate clinical interpretation and diagnosis in Brazil.
- The newly determined values should be considered for clinical use in Brazil to improve diagnostic precision.