VetScan HM2™ Technology

How it Works

The VetScan HM2 Hematology System is designed based on impedance technology. It offers an 18-parameter CBC analysis, including a 3-part WBC differential and three cellular histograms.

Impedance Technology

• Electrically neutral blood cells pass through an electrically charged aperture generating a "pulse".
• Cell counts are determined by the number of pulses measured in a given volume of blood over a set period of time.
• The decrease in electrical conductance (degree of intensity) as measured is directly proportional to the cell volume.
• This size discrimination along with susceptibility to various lysing agents distinguishes the basic cell types (red, white, and platelet).

Histograms

• RBC/PLT histogram
• WBC histogram (differential results generated by size determination)

Hemoglobin Determination

Hemoglobin is measured directly through a spectrophotometric reading.

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