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Haemoglobin

Hgb Hb
EDTA whole blood g/dL

About this test

Oxygen-carrying protein in red blood cells. The primary marker for diagnosing and monitoring anaemia and polycythaemia.

Reference Ranges

Sex Age Range Notes
All 0–5 yrs 9.5 – 14.5 Infant
All 6–17 yrs 11.5 – 15.5 Child/adolescent
Female ≥ 18 yrs 11.5 – 15.5 Adult female
Male ≥ 18 yrs 13.5 – 17.5 Adult male

Clinical Interpretation

Low / Decreased
Anaemia — iron deficiency, B12/folate deficiency, chronic disease, haemolysis, bone marrow failure, blood loss.
High / Increased
Polycythaemia — primary (PV), secondary (high altitude, COPD, right-to-left shunt), dehydration.

Related Tests

Reticulocyte Count Vitamin B12 Ferritin
Specimen
EDTA whole blood
Reporting Unit
g/dL
Category
🩸 Hematology

⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.