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Key characteristics of four commercially available assays for serum N-terminal propeptide of type I collagen (PINP).
| Manufacturer | Methodology | Measurand | Analytics |
|---|---|---|---|
| Orion Diagnostica, Finland | Radioimmunoassay | Intact PINP | Manual |
| Immunodiagnostics Systems CDS), UK | Chemiluminescence immunoassay | Intact PINP | Automated |
| Roche Diagnostics, Germany | Electrochemiluminescence immunoassay | Total PINP | Automated |
| Uscn, Life Science, China | Enzyme-linked immunosorbent assay | Total PINP | Manual |
