General
Synonym/Acronym:
WBC with diff, leukocyte count, white cell count.
Common Use:
To evaluate viral and bacterial infections and to assist in diagnosing and monitoring leukemic disorders.
Specimen:
Whole blood from one full lavender-top (EDTA) tube.
Normal Findings:
(Method: Automated, computerized, multichannel analyzers. Many analyzers can determine a five- or six-part WBC differential. The six-part automated WBC differential identifies and enumerates neutrophils, lymphocytes, monocytes, eosinophils, basophils, and immature granulocytes (IG), where IG represents the combined enumeration of promyelocytes, metamyelocytes, and myelocytes as both an absolute number and a percentage. The five-part WBC differential includes all but the immature granulocyte parameters.)
White Blood Cell Count and Differential| Age | Conventional Units WBC×103/microL | | Neutrophils | | Lymphocytes | Monocytes | Eosinophils | Basophils |
| | Total Neutrophils (Absolute) and % | Bands (Absolute) and % | Segments (Absolute) and % | (Absolute) and % | (Absolute) and % | (Absolute) and % | (Absolute) and % |
| Birth | 9.1–30.1 | (5.5–18.3) 61% | (0.8–2.7) 9.1% | (4.7–15.6) 52% | (2.8–9.3) 31% | (0.5–1.7) 5.8% | (0.02–0.7) 2.2% | (0.1–0.2) 0.6% |
| 1–23 mo | 6.1–17.5 | (1.9–5.4) 31% | (0.2–0.5) 3.1% | (1.7–4.9) 28% | (3.7–10.7) 61% | (0.3–0.8) 4.8% | (0.2–0.5) 2.6% | (0–0.1) 0.5% |
| 2–10 yr | 4.5–13.5 | (2.4–7.3) 54% | (0.1–0.4) 3.0% | (2.3–6.9) 51% | (1.7–5.1) 38% | (0.2–0.6) 4.3% | (0.1–0.3) 2.4% | (0–0.1) 0.5% |
| 11 yr–older adult | 4.5–11.1 | (2.7–6.5) 59% | (0.1–0.3) 3.0% | (2.5–6.2) 56% | (1.5–3.7) 34% | (0.2–0.4) 4.0% | (0.05–0.5) 2.7% | (0–0.1) 0.5% |
| *SI Units (Conventional Units × 1 or WBC count x 109/L). |
White Blood Cell Count and Differential| Age | Immature Granulocytes (Absolute) (103/microL) | Immature Granulocyte Fraction (IGF) (%) |
| Birth–9 yr | 0–0.03 | 0–0.4% |
| 10 yr−older adult | 0–0.09 | 0–0.9% |
Complete Blood Count, WBC Count and Differential has been found in Davis's Lab & Diagnostic Tests
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