Davis's Lab & Diagnostic Tests

Complete Blood Count, Hemoglobin

Complete Blood Count, Hemoglobin is a topic covered in the Davis's Lab & Diagnostic Tests.

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Common Use:
To evaluate anemia, polycythemia, hydration status, and monitor therapy such as transfusion.

Whole blood from one full lavender-top (EDTA) tube, Microtainer, or capillary. Whole blood from a green-top (lithium or sodium heparin) tube may also be submitted.

Normal Findings:
(Method: Spectrophotometry)

AgeConventional UnitsSI Units (Conventional Units × 10)
Cord blood13.5–20.7 g/dL135–207 g/L
0–1 wk15.2–23.6 g/dL152–236 g/L
2–3 wk13.3–18.7 g/dL133–187 g/L
1–2 mo10.7–18 g/dL107–180 g/L
3–6 mo11.7–16.3 g/dL117–163 g/L
7 mo–1 yr10.3–14.3 g/dL103–143 g/L
2–6 yr10–13.3 g/dL100–133 g/L
7–15 yr10.7–14 g/dL107–140 g/L
16–18 yr11–15 g/dL110–150 g/L
 Male14–17.3 g/dL140–173 g/L
 Female11.7–15.5 g/dL117–155 g/L
Pregnant Female
 1st Trimester11.6–13.9 g/dL116–139 g/L
 2nd and 3rd Trimester9.5–11 g/dL95–110 g/L
Values are slightly lower in older adults.Reference range values may vary between laboratories.

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