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Hematocrit - Hct

What does the Hematocrit - Hct blood test mean? Get a free analysis of your blood test now. Here's what you get with our free analysis:

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Hematocrit measures the percentage of red blood cells in your total blood volume. It's a crucial indicator of your blood's oxygen-carrying capacity. This test helps diagnose various conditions, including anemia, polycythemia, and dehydration. It's also used to monitor blood loss, response to certain medications, and overall health. Hematocrit levels can be affected by factors such as altitude, pregnancy, and certain medical conditions. Regular monitoring of hematocrit is essential for assessing overall health and detecting potential blood disorders early.

Acceptable Range:   37 to 50
Ideal for Women:   37-47
Ideal for Men:   42-52
Ideal for Girls:   36-46
Ideal for Boys:   37-49
Test Method: Blood test

What do readings below 37 % for Hematocrit - Hct mean?

A low hematocrit reading indicates a decreased percentage of red blood cells in the blood, which may suggest:

  • Anemia (various types)
  • Blood loss (acute or chronic)
  • Nutritional deficiencies (iron, vitamin B12, folate)
  • Bone marrow disorders
  • Chronic diseases (kidney disease, cancer)
  • Overhydration
  • Pregnancy (due to increased plasma volume)

Low hematocrit can lead to fatigue, weakness, and shortness of breath. Further testing may be needed to determine the underlying cause.

What do readings above 50 % for Hematocrit - Hct mean?

A high hematocrit reading indicates an increased percentage of red blood cells in the blood, which may suggest:

  • Polycythemia vera
  • Dehydration
  • Chronic lung diseases
  • Congenital heart diseases
  • Living at high altitudes
  • Smoking
  • Use of certain medications (e.g., erythropoietin)
  • Bone marrow disorders

High hematocrit can increase blood viscosity, potentially leading to blood clots, stroke, or heart problems. Further evaluation is necessary to determine the cause and appropriate treatment.

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