Hematocrit
Learn about Hematocrit levels for blood volume and oxygen transport assessment. Track red blood cell concentration for health insights.
What is Hematocrit?
Hematocrit measures the percentage of blood volume occupied by red blood cells. It reflects your blood’s oxygen-carrying capacity and provides information about red blood cell concentration. Hematocrit closely correlates with hemoglobin levels.
Why is it Tested?
Doctors measure hematocrit to diagnose and monitor anemia, assess blood loss, evaluate polycythemia, and screen for various blood disorders. It’s included in complete blood counts and helps guide treatment decisions for conditions affecting red blood cell production.
Normal Ranges
Reference ranges vary by gender:
- Men: 42–50%
- Women: 37–47%
Values may be slightly different in children, elderly individuals, and those living at high altitudes.
Reference ranges vary by authority. Track yours across multiple standards with automatic unit conversions in LabsVault.
What do Abnormal Results Mean?
Abnormal results are not a diagnosis. Always discuss your results with a qualified healthcare provider before making any medical decisions.
Low Hematocrit (Anemia)
Reduced levels may indicate:
- Iron deficiency anemia
- Blood loss (acute or chronic)
- Bone marrow disorders
- Chronic kidney disease
- Nutritional deficiencies
- Chronic inflammatory conditions
High Hematocrit (Polycythemia)
Elevated levels suggest:
- Dehydration
- Polycythemia vera
- Lung disease
- Heart disease
- Living at high altitude
- Smoking
How to Track Over Time
Hematocrit trends help monitor anemia treatment response and detect developing blood disorders. Gradual changes may signal chronic conditions, while acute changes might indicate bleeding or hemolysis. Tracking alongside hemoglobin provides comprehensive assessment of oxygen-carrying capacity.
Track your Hematocrit results over time
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