Quick Review Cards for Medical Laboratory Science

Comparison of Conventional and SI Units

for Adult Reference Ranges

Hematology Review 289

CONVENTIONAL UNITS SI UNITS

WBC 4.5–11.5 × 10^3 /L 4.5–11.5 × 10^9 /L

RBC Male: 4.6–6 × 10^6 /L Male: 4.6–6 × 10^12 /L

Female: 4–5.4 × 10^6 /L Female: 4–5.4 × 10^12 /L

HGB Male: 14–18 g/dL Male: 140–180 g/L

Female: 12–15 g/dL Female: 120–150 g/L

HCT Male: 40%–54% Male: 0.40–0.54 L/L

Female: 35%–49% Female: 0.35–0.49 L/L

MCV 80–100 fL 80–100 fL

MCH 27–31 pg 27–31 pg

MCHC 32%–36% 32–36 g/dL

PLT 150–450 × 10^3 /L 150–450 × 10^9 /L

SI = Syst‘ me International d’Unit” s (international system of units).