The Roche Ferritin Elecsys 200T (REF 4491785190) is an electrochemiluminescence immunoassay (ECLIA) reagent kit intended for the in vitro quantitative determination of ferritin in human serum and plasma. It is designed to run on Roche cobas e immunoassay analyzers as part of routine iron metabolism workups in clinical laboratory settings.

Key Features
- Assay technology: Sandwich electrochemiluminescence immunoassay (ECLIA) using ruthenium-labeled antibodies and streptavidin-coated microparticles.
- Pack size: 200 tests per kit.
- Ready-to-use cassette: Pre-filled reagent rackpack with M, R1 and R2 reagents for direct loading on the analyzer.
- Short turnaround: 18-minute total assay duration on supported Roche cobas e platforms.
- Sample types: Serum and Li-/K3-/K2-EDTA and lithium-heparin plasma as defined in the official method sheet.
- Traceability: Standardized against the 3rd IS Ferritin (NIBSC code 94/572).
- Storage: Refrigerated 2 to 8 degrees C, upright orientation as specified in the IFU.

Clinical Applications
- Quantitative measurement of ferritin to support assessment of iron status.
- Aid in laboratory workup of iron-deficiency states and iron overload conditions.
- Monitoring of patients on iron supplementation or chelation therapy as directed by the clinician.
- Use within hospital central laboratories, reference laboratories and clinical chemistry/immunochemistry workflows running Roche cobas e analyzers.

Product Information
- Brand: Roche Diagnostics.
- Product line: Elecsys.
- Analyte: Ferritin.
- REF / UPN: 4491785190.
- Configuration: 200 tests per kit.
- Compatible analyzers: Roche cobas e immunoassay modules as listed in the current Method Sheet.
- Measuring range: Not specified in the located sources; refer to the current Roche Method Sheet for the lot in use.
- Regulatory status: Refer to the official Roche labeling for the destination market.
- Intended users: Professional in vitro diagnostic use by trained laboratory personnel.