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Understanding Blood Tests for Health Evaluation

Learn how blood tests can evaluate organ health, diagnose diseases, check risk factors, and assess medication effectiveness. Understand what different measurements mean with a real example.

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Understanding Blood Tests for Health Evaluation

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  1. Diagnostic Blood Tests Danya, Steven, Runyang, Sabih September 17, 2019 PHM142 Fall 2019 Instructor: Chesa Dojo Soeandy • Coordinator: Jeffrey Henderson

  2. What is a Blood Test? • “Any test designed to discover abnormalities in a sample of a person’s blood” • Evaluate organs • Diagnose diseases • Find risk factors • Test blood clotting • Effectiveness of drugs

  3. How does a Blood Test Work? Diet Stress Medication use Alcohol Exercise

  4. What do they Measure? • Hematology • RBC • WBC • Platelets • Hemoglobin • Hematocrit • Mean Corpuscular Volume (MCV) • Blood Glucose • Cholesterol • Vitamins and Minerals

  5. What do the Results mean?

  6. Blood Test Results Example Danya’s Blood Test • How to read results • Reference range • Attention What can you infer from the results? Microcytosis: MCV < 70 fl in adults • Thalassemia or Iron Deficiency Cold/Getting over a cold

  7. Looking at the whole picture Not technically anemic

  8. Assessing Heart Disease Risk Patient at risk for Heart Disease

  9. Summary • “Any test designed to discover abnormalities in a sample of a person’s blood” • Useful for: • Evaluating organ health • Diagnosing diseases and conditions • Checking for any risk factors for diseases • Assessing if medicines are working • Commonly used to measure: • Hematology • Includes: red blood cells, white blood cells, platelets, hemoglobin, hematocrit, and mean corpuscular volume • Blood glucose • Lipoprotein Panel (HDL and LDL cholesterol levels)

  10. References • Blood Tests. https://www.nhlbi.nih.gov/health-topics/blood-tests • Overview of Blood Tests. https://www.nhs.uk/conditions/blood-tests/ • Blood Test and Lab Analysis. https://www.precisionnutrition.com/all-about-blood-work • Blood Tests MCV and MCHC. https://www.medicine.mcgill.ca/physio/vlab/bloodlab/mcv-mchc_n.htm

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