Diagnostica Stago | Start 4 Coagulation Analyzer Manual

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.

: Primarily clotting assays, but also capable of chromogenic and immunoassay methodologies in random access mode. Labexchange.com Maintenance and Troubleshooting Daily Maintenance diagnostica stago start 4 coagulation analyzer manual

Diagnostica Stago STart 4 (often referred to as the ST4) is a semi-automated, benchtop hemostasis analyzer designed for low-to-medium volume laboratories or as a backup for fully automated systems. It utilizes Stago's patented Viscosity-based Detection System (VDS) Assay principles and capabilities Coagulation testing on the

: Regularly clean the working surface, washing wells, and thermal conductors using a 1:10 dilution of 5% sodium hypochlorite. Fibrinogen can be measured by Clauss or other

The manual is divided into logical sections, each critical for a different role in the lab.

In the fast-paced environment of a clinical hematology or coagulation laboratory, precision is non-negotiable. For laboratories relying on the , the device represents a benchmark for reliability in hemostasis testing. However, even the most sophisticated machinery is only as effective as the operator’s understanding of its functions. This is where the Diagnostica Stago START 4 Coagulation Analyzer Manual becomes indispensable. Far more than a simple booklet, this document is the operational bible for the START 4, guiding users through installation, daily operation, maintenance, and advanced troubleshooting.