Haematocrit

Haematocrit measures the proportion of blood volume occupied by red blood cells, indicating oxygen-carrying capacity.

📋 About This Biomarker

Haematocrit is the proportion of blood volume occupied by red blood cells. It is expressed as a percentage, reflecting the ratio of red blood cells to the total blood volume. Haematocrit is a crucial measure of overall blood health and oxygen-carrying capacity. Red blood cells contain hemoglobin, which transports oxygen from the lungs to tissues and organs. Therefore, a normal haematocrit level indicates efficient oxygen delivery throughout the body. Abnormal haematocrit levels can suggest various medical conditions: low haematocrit (anemia) can result from blood loss, nutritional deficiencies, or chronic diseases, while high haematocrit (polycythemia) can be caused by dehydration, bone marrow disorders, or high altitude living.

🎯 Why We Test This

Testing haematocrit levels is essential for diagnosing and managing conditions like anemia, dehydration, and polycythemia. It provides insights into the body's ability to transport oxygen efficiently and can guide treatment for various health issues. Regular monitoring is important for individuals with symptoms like fatigue, dizziness, or those with chronic diseases. Maintaining haematocrit levels within the normal range is vital for overall health and preventing complications related to abnormal red blood cell counts.

⚠️ What Affects It

Factors influencing haematocrit levels include hydration status, nutritional intake (iron, vitamin B12, folate), chronic diseases, bone marrow function, and environmental conditions like altitude. Certain medications, smoking, and hormonal disorders can also impact haematocrit levels.

📈 How to Improve

For high haematocrit levels, addressing dehydration, avoiding smoking, and treating underlying conditions like polycythemia vera are crucial. Ensuring adequate hydration and regular monitoring are key. For low haematocrit levels, increasing dietary intake of iron, vitamin B12, and folate, and treating underlying causes like chronic disease or bone marrow disorders are important. Regular monitoring and consultation with a healthcare provider ensure that haematocrit levels remain within the optimal range.

📊 Understanding Your Results

Low (< 0.4)
Low haematocrit levels (anemia) indicate a reduced proportion of red blood cells, leading to symptoms like fatigue, weakness, and shortness of breath. Causes include blood loss, nutritional deficiencies, bone marrow disorders, and chronic diseases. Treating the underlying cause and possibly supplementing with iron, vitamin B12, or folate are essential steps.
Optimal (0.4 - 0.54)
Normal haematocrit levels indicate a healthy balance of red blood cells and plasma, ensuring efficient oxygen transport and overall good health. This balance reflects proper bone marrow function, adequate nutrition, and good hydration status. Haematocrit levels near the upper limit suggest the potential for mild dehydration or a higher than average red blood cell count. This condition warrants monitoring and ensuring proper hydration and evaluation of other underlying causes like smoking or mild hypoxia. Haematocrit levels near the lower limit may indicate the onset of anemia, often due to nutritional deficiencies (iron, vitamin B12, folate) or chronic diseases. It suggests a need for closer monitoring and potentially addressing dietary intake or underlying health issues.
High (> 0.54)
Elevated haematocrit levels (polycythemia) can indicate dehydration, which concentrates red blood cells due to reduced plasma volume. It can also result from bone marrow disorders like polycythemia vera, chronic hypoxia (due to smoking or living at high altitudes), or use of performance-enhancing drugs. High haematocrit levels increase blood viscosity, potentially leading to clotting issues, stroke, or heart attack.
Also known as: PCV, hct, Haematocrit (HCT)