Author

F. R. Marpaung

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Open access Aug 2026

Longitudinal Sigma-Metric Profiling of Two Clinical Chemistry Platforms Using Peer-Group Internal Quality Control

Background: The Six Sigma metric benchmarks analytical performance, but most reports assess one platform at one time point, merging trueness with imprecision. Using routine peer-group internal quality control (IQC), we profiled two clinical chemistry platforms over five months. Because peer-group IQC compares imprecisi...

Indah Meyliza, A. Aryati, F. R. Marpaung · Diagnostics · 0 citations

Open access Jul 2026

ANTI-SARS-COV-2 S ANTIBODY IN CORRELATION WITH NK-CELLS, ABSOLUTE LYMPHOCYTE COUNT, CD4+/CD8+ ¬RATIO AMONG LABORATORY PROFESSIONALS RECEIVING SINOVAC VACCINE

Findings indicated that the first and second doses of the inactivated vaccine stimulated humoral immune response more strongly than a cellular immune response in this population, which can be utilized in selecting the vaccine types for healthcare professionals to prevent potential infections from new SARS-CoV-2 variant...

Luhut Suryanugraha, B. R. A. Sidharta, M. D. Pramudianti et al. · INDONESIAN JOURNAL OF CLINIC... · 0 citations