WBC differential Advia 2120

A white cell differential on the Advia 2120 automated cell counter is shown here. Staining for peroxidase (perox) is displayed on the x axis versus cell size on the y axis. Neutrophils (pink) and eosinophils (yellow) containing the most perox activity are found to the right. Cells with little or no perox cluster to the left, such as lymphocytes/basophils (blue) and large unstained cells (blasts, variant and atypical lymphocytes, light blue). Monocytes (green) contain a small amount of perox and are located between the neutrophils and large unstained cells. Noise is indicated in the lower left hand corner (white). Nucleated red blood cells are present in the area between lymphocytes and noise; platelet clumps are found in the area to the right of the nucleated red blood cells.