Design and user interface The START 4 is engineered for simplicity and space efficiency. Manuals typically emphasize an intuitive touch-screen interface, clear stepwise workflows for test setup, and straightforward loading of reagents and cuvettes or cartridges. A small benchtop footprint and built-in refrigeration for reagents may be present depending on configuration. The design minimizes hands-on steps: users often prepare and load samples and reagents, then select assays or predefined profiles from the menu. The analyzer handles pipetting, incubation, and optical or mechanical clot detection automatically.
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Once the VDS mechanical threshold registers a definitive clot, the system records the exact endpoint in seconds.
The core technology behind Stago analyzers. This method uses a magnetic field to oscillate a steel ball within the cuvette. As the plasma clots and viscosity increases, the oscillation amplitude of the ball changes, which is detected and measured. diagnostica stago start 4 coagulation analyzer manual
12.4 seconds.
The Diagnostica Stago STart 4 Coagulation Analyzer manual Go to product viewer dialog for this item.
Stable workbench, temperature control. Power Requirements: Proper grounding.
The result will be displayed in seconds and, if calibrated, as a ratio, percentage, or concentration (e.g., g/L for fibrinogen). 3. Maintenance and Troubleshooting Design and user interface The START 4 is
Usually indicates a failure in reagent addition or a sample issue.
The result flashed green. INR: 3.1. Therapeutic.
It is essential to run Quality Control samples (Normal and Abnormal levels) at the start of every shift.
Assay principles and capabilities Coagulation testing on the START 4 commonly uses optical or mechanical clot-detection methods. For PT/INR, the analyzer measures the time for plasma to clot after adding thromboplastin and calcium; the raw PT is converted to INR using reagent-specific sensitivity index (ISI) calibration. For aPTT, intrinsic-pathway activators and phospholipid reagents trigger coagulation and clot time is measured. Fibrinogen can be measured by Clauss or other methods that quantify clotting time after high-concentration thrombin addition, converted to fibrinogen concentration via calibration curve. Depending on available reagent decks and software options, the START 4 may also support D-dimer, thrombin time, and specialized assays, with manufacturers providing validated reagent kits and calibrators. The design minimizes hands-on steps: users often prepare
Pipette 100 µL of plasma into the cuvette and incubate for the required time (e.g., 2 minutes for certain assays).
ST Art 4 Reference Manual | PDF | Electromagnetic Interference
The Start 4 is a four-channel coagulation analyzer. It is specifically designed to handle routine coagulation tests, including PT (Prothrombin Time), APTT (Activated Partial Thromboplastin Time), Fibrinogen, and clotting factors. Key Features