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5 General Overview and Principles of Operation
5.1 General Overview
The ‘Abacus 5’ is a fully automated high quality hematology analyzer for in vitro diagnostic use in clinical laboratories.
It provides precise and accurate 5-part differential measurement using a laser based optical measurement
technology.
The ‘Abacus 5’ analyzer uses the impedance method for measurement of leukocytes (WBC), erythrocytes (RBC) and
platelet (PLT) concentrations. Measurement of the hemoglobin (HGB) content of red blood cells is accomplished by
photometric measurement technology. Five part leukocyte differential (LYM%, MON%, NEU%, EOS%, BAS%) is
accomplished using optical laser-based flow cytometric technology.
A vivid color touch screen display is featured with an intuitive, informative, and attractive user interface. A START
button allows one-touch operation for ease of use.
The ‘Abacus 5’ analyzer’s unique software system supports the use of many commonly used external printers with its
USB connections. The ‘Abacus 5’ internal database is capable of storing 100,000 patient, QC, and calibration result
records including flags and graphical scatter diagrams and histograms. The system software is field-upgradeable to
ensure up-to-date operation.
An automatic optional Autosampler is available (sold separately) for automated processing of up to 100 sample tubes
for increased laboratory efficiency.
The ‘Abacus 5’ features advanced Ethernet LIS connectivity using the HL7 protocol in addition to standard serial
interfaces, providing the clinical laboratory with flexible connectivity options.
5.1.1 Measured Parameters
‘Abacus 5’ determines 21 hematology parameters including 5-part WBC differential. The instrument requires 110 l
of whole blood-sample in Closed- and Open-vial mode. Cycle time is 60 seconds.
Neutrophil absolute count
Lymphocyte absolute count
Eosinophil absolute count
Mean Corpuscular Hemoglobin
Mean Corpuscular Hemoglobin Concentration
Red Blood cells Distribution Width
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