Complete Blood Count (CBC)

Lymphocytes (%)

Normal range 20–40 % of WBC (0.2–0.4 fraction SI). Specimen: Whole blood (EDTA).

Also known as: lymphs.

20–40 % of WBCReference range

Reference range

Conventional% of WBC

2040

SIfraction

0.20.4

Specimen	Whole blood (EDTA)
Conventional range	20–40 % of WBC
SI range	0.2–0.4 fraction
Conversion factor	×0.01 (conventional → SI)
Panel	Complete Blood Count (CBC)

Convert any Lymphocytes (%) result between units on the unit converter.

What is the normal range for Lymphocytes (%)?

The standard teaching reference range for Lymphocytes (%) is 20–40 % of WBC in conventional units, or 0.2–0.4 fraction in SI units. This value is measured in whole blood (edta).

Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population — always use the range printed on the actual result.

Above the range

Common causes of a high Lymphocytes (%)

Viral infections (mono, pertussis)
Chronic lymphocytic leukemia
Chronic infection

Below the range

Common causes of a low Lymphocytes (%)

Corticosteroids
HIV/AIDS
Immunodeficiency
Sepsis

At the bedside

Nursing considerations

Lymphocytosis commonly accompanies viral rather than bacterial illness.

Study aid

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Absolute Neutrophil Count (ANC)2500–7000 cells/µL Basophils (%)0–1 % of WBC Eosinophils (%)1–4 % of WBC Hematocrit (Hct)36–52 %Hemoglobin (Hgb)12–17.5 g/dL Mean Corpuscular Hemoglobin (MCH)27–33 pg/cell