Quick Review Cards for Medical Laboratory Science

Normal Leukocytes of the Peripheral Blood Hematology Review 315

ADULT REFERENCE ADULT REFERENCE

RANGE: RANGE:

CELL SIZE NUCLEUS CYTOPLASM RELATIVE (%) ABSOLUTE (¥ 109 /L)

Segmented

neutrophil

Band

Eosinophil

Basophil

Monocyte

Lymphocyte

10–16 m

10–16 m

10–16 m

10–16 m

12–18 m

7–15 m

50–70

2–6

0–4

0–2

2–9

20–44

2.4–7.5

0.1–0.6

0–0.4

0–0.2

0.1–0.9

1.2–3.4

Segmented. 2–5 lobes

connected by thread-like

filament of chromatin.

Horseshoe shaped. Parallel

sides with visible chromatin in

between. No filament.

Band shaped or segmented

into 2 lobes.

Usually difficult to see

because of overlying granules.

Round, horseshoe shaped, or

lobulated. Convoluted. Loose

strands of chromatin.

Round or oval. Dense blocks of

chromatin. Indistinct chromatin/

parachromatin separation.

Pinkish tan with

neutrophilic granules

Pinkish tan with

neutrophilic granules

Large red granules

Dark purple granules

Gray-blue with indistinct

pink granules. Vacuoles.

Occasional pseudopods

Sparse to abundant. Sky

blue. May contain a few

azurophilic granules

Note: Automated analyzers do not differentiate between bands and segs.