Porth's Essentials of Pathophysiology, 4e

x A

A

p

p

e

n

d

i

Lab Values

Prefixes Denoting Decimal Factors

TABLE A-1

Prefix

Symbol

Factor

mega

M

10 6 10 3 10 2

kilo

k

hecto deci centi milli micro nano

h d

10 −1 10 −2 10 −3 10 −6 10 −9 10 −12 10 −15

c

m

μ n p

pico

femto

f

Hematology

TABLE A-2

Test

Conventional Units

Conversion Factor

SI Units

M. 4.2–5.4 × 10 6 / μ L F. 3.6–5.0 × 10 6 / μ L

Erythrocyte count (RBC count)

1.0

M. 4.2–5.4 × 10 12 /L F. 3.6–5.0 × 10 12 /L M. 0.40–0.50 F. 0.37–0.47 M. 140–165 g/L F. 120–150 g/L 0.40–0.53 fmol/cell

Hematocrit (Hct)

M. 40–50% F. 37–47%

0.01

Hemoglobin (Hb)

M. 14.0–16.5 g/dL F. 12.0–15.0 g/dL

10.0

Mean corpuscular hemoglobin (MHC) Mean corpuscular hemoglobin concentration (MCHC) Mean corpuscular volume (MCV)

27–34 pg/cell

31–35 g/dL

10.0

310–350 g/L

85–100 fL/cell

Reticulocyte count

1.0–1.5% total RBC 150–400 × 10 3 / μ L 4.8–10.8 × 10 3 / μ L

1.0 1.0 1.0

Platelet count

150–400 × 10 9 /L 4.8–10.8 × 10 9 /L

Leukocyte count (WBC count)

Basophils Eosinophils Lymphocytes Monocytes

0.3–0.5%

1–3%

25–33%

3–7%

Neutrophils (segmented [Segs])

60–65%

Neutrophils (bands)

0–4%

M = Male; F = Female.

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