Differentiating Bands from Segs

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The page below is a sample from the LabCE course Normal Peripheral Blood Cells. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Differentiating Bands from Segs

The presence of thin filaments between nuclear lobes is what distinguishes a segmented neutrophil from a band neutrophil.
Sometimes it is difficult to differentiate between a band and a segmented neutrophil. For example, in the image on the right, the nucleus of the neutrophilic cell is folded, making exact identification difficult. However, due to the thickness of the nucleus and the absence of a filament, we would classify it as a band.