Know Your Blood Parameter : Hematocrit (HCT)

1. Parameter Name 

Hematocrit (HCT)

2. Test Type 

Blood

3. Normal Range

• Men: 40.7% – 50.3%

• Women: 36.1% – 44.3%

• Children: 32% – 44%

  
  

4. High Levels Indicate 

May suggest dehydration, polycythemia vera, lung disease, or living at high altitude. It can lead to thicker blood, increasing risk of clotting or stroke.

5. Low Levels Indicate 

May indicate anemia, blood loss, nutritional deficiencies, chronic kidney disease, or bone marrow suppression.

6. Why It's Tested 

To assess red blood cell proportion, screen for anemia or polycythemia, monitor response to treatments like transfusion or dialysis.

7. Associated Symptoms (if abnormal)

• Low: Fatigue, weakness, shortness of breath, pale skin

• High: Headache, dizziness, flushing, blurred vision

  
  

8. What To Do If Abnormal 

Discuss results with a physician. May require further testing including hemoglobin, RBC count, iron studies, kidney function, or EPO levels.

9. Common Conditions Related 

Anemia, dehydration, polycythemia vera, chronic obstructive pulmonary disease (COPD), kidney disorders.

10. Nutrition or Lifestyle Connection 

Eat iron-rich foods (meat, beans, spinach), ensure adequate hydration, avoid smoking. Address vitamin B12 or folate deficiencies if present.

11. References (APA Format)

• MedlinePlus. (2023). Hematocrit (HCT). U.S. National Library of Medicine. https://medlineplus.gov/lab-tests/hematocrit-hct/

• Mayo Clinic. (2022). Complete blood count (CBC). https://www.mayoclinic.org/tests-procedures/complete-blood-count/about/pac-20384919

• Pagana, K. D., & Pagana, T. J. (2021). Mosby’s diagnostic and laboratory test reference (15th ed.). Elsevier.