What Does Low Hemoglobin Mean?

Low hemoglobin is called anemia. It means your blood carries less oxygen than normal.

Thresholds

• Men: below 13.5 g/dL
• Women: below 12.0 g/dL
• Pregnancy: below 11.0 g/dL

Common Causes

• Iron deficiency (most common)
• Blood loss (heavy periods, GI bleeding)
• B12/folate deficiency
• Chronic disease
• Bone marrow disorders

Symptoms

• Fatigue
• Shortness of breath
• Pallor
• Dizziness
• Rapid heartbeat
• Cold hands/feet

Next Steps

• Check MCV, MCHC, RDW to classify anemia
• Check ferritin, B12, folate
• GI evaluation if blood loss suspected