Four-Channel Semi-Automatic Coagulation Analyzer

What is the Four-Channel Semi-Automatic Coagulation Analyzer?

This instrument provides four independent measuring channels so that a patient sample, a control and duplicates can run in parallel, reducing operator waiting time. It suits clinics and small laboratories with a moderate daily workload of PT, APTT and fibrinogen tests.

Overview

Each channel has its own cuvette position, detection system and timer, so four reactions proceed independently after reagent addition. The operator prepares samples and reagents, loads the cuvettes and starts each channel, and the instrument reports results as they finish, which allows interrupted work patterns typical of a clinic. Incubation positions and reagent reservoirs are shared, and the software stores calibrations per reagent lot so that routine work needs only control verification. Reagent consumption scales with the number of channels in use, so the operator can decide how many channels to activate depending on the day's workload. Because handling remains manual, consistent pipetting and a fixed order of operations are essential for results to be comparable between channels.

How does it work?

A semi-automatic coagulation analyzer provides a temperature-controlled measuring position, usually at 37 degrees Celsius, a detection system and a timer. The operator pipettes plasma into the cuvette, incubates it, adds the reagent and starts the measurement. Optical instruments detect the increase in turbidity or the change in light scatter as fibrin strands form; mechanical instruments detect the change in movement or viscosity of a steel ball or magnetic particle; turbidimetric and chromogenic instruments measure light absorption changes from the fibrin network or from a coloured product released by a synthetic substrate. The analyzer stops the timer at the detection threshold and reports the clotting time in seconds, a ratio for prothrombin time or a concentration for fibrinogen. Because sample and reagent handling remain manual, pipetting accuracy and consistent incubation timing have a large influence on results.

What are the key features?

• Four independent channels with separate cuvettes and timers
• Parallel measurement of patient samples and controls
• Shared incubation positions and reagent reservoirs
• Stored calibration per reagent lot for routine work
• Selectable number of active channels per run
• Channel-by-channel results reported as they complete

What are the technical specifications?

A typical four-channel semi-automatic coagulation analyzer configuration offers channels of 4 independent measuring channels, detection principle of Optical scatter or turbidimetric detection, incubation temperature of 37 °C ±0.3 °C, throughput of Up to 60–100 tests/h with manual handling, sample volume of 50–100 µL plasma per test and reagent positions of 4–6 onboard reagent positions. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Four-Channel Semi-Automatic Coagulation Analyzer is used in clinic coagulation testing with parallel samples, anticoagulation clinic INR batches, small hospital routine hemostasis testing and pre-operative screening clinics. Across the wider Semi-Automatic Coagulation Analyzers class, laboratories also deploy it for routine PT and APTT testing in clinics, anticoagulation monitoring with INR and pre-operative coagulation screening.

Which standards and certifications apply?

Relevant standards and methods include ISO 15189, CLSI H57, CLSI H21, CLSI EP05, ICSH recommendations on coagulation testing, IEC 61010-1 and IEC 61010-2-101. Certification candidates for this model are CE, ISO 13485 manufacturing and NMPA class II registration; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Place the analyzer on a level bench away from vibration and draughts, since both disturb optical clot detection, and allow the instrument to reach and hold 37 degrees Celsius before use. Verify performance at installation against a reference instrument or assigned plasma samples for prothrombin time, APTT and fibrinogen, and check the incubation temperature with an external thermometer. Daily work includes running normal and abnormal control plasma, checking reagent and cuvette lot numbers and recording all values. Reagents must be reconstituted, stored and expired strictly according to the instructions, and citrated plasma should be separated, frozen and thawed under controlled conditions because pre-analytical handling has a large influence on clotting times.

How do I select the right Four-Channel Semi-Automatic Coagulation Analyzer?

Choose a four-channel instrument when daily volume exceeds about twenty tests and waiting time between samples is a practical problem. In the RFQ confirm the number of prewarming positions, whether channels can be started independently, and the reagent consumption per test, since four active channels consume four times the reagent of a single one.

How does it compare with other Semi-Automatic Coagulation Analyzers variants?

Choose the detection principle according to the samples you receive: mechanical or magnetic detection tolerates icteric, hemolyzed and lipemic plasma, while optical detection is simpler and usually requires a clear sample. Then decide how many channels you need, because a four-channel instrument allows several patients or duplicate measurements in one run and reduces operator waiting time. Check the menu the instrument supports, especially whether fibrinogen, D-dimer or antithrombin assays are available, since not every semi-automatic platform can perform chromogenic or immunoturbidimetric tests. Confirm the sample and reagent volumes, the incubation temperature accuracy and the calibration requirements, and ask whether the analyzer stores calibrator values for each reagent lot.