Hemoglobin — lab reference
In the reference guideAsk your clinician to consider altitude and iron/B12/folate status. Pregnancy requires trimester-specific ranges.
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What’s searchable?Ask your clinician to consider altitude and iron/B12/folate status. Pregnancy requires trimester-specific ranges.
The test method matters. Ask your clinician to review with MCV and MCHC.
Analyzer-specific; hemolysis and cold agglutinins may interfere.
Normal <5.7; prediabetes 5.7-6.4; diabetes ≥6.5. Altered RBC turnover can make A1C unreliable.
Ask your clinician to confirm with microscopy; exercise, menstruation, myoglobin, and hemolysis may interfere.
Hydration and altitude are major modifiers. Ask your clinician to review alongside hemoglobin and RBC indices.
Interpret relative to hemoglobin, oxygenation, and kidney function.
Your lab may use its own range. Symptoms, medicines, and the types of white blood cells also matter.
Altitude, smoking, hydration, androgen therapy, and pregnancy may shift values.
Macrocytosis and microcytosis require cause-specific interpretation.
Useful with MCV for mixed nutrient deficiencies and evolving anemia.
Local analyzer range governs. Ask your clinician to review trends and collection artifacts.
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