Understanding Blood Tests

What Are Blood Tests?

Blood tests are laboratory analyses performed on blood samples to evaluate various aspects of your health. These tests provide crucial information about organ function, disease status, and overall well-being.

Common Types of Blood Tests

Complete Blood Count (CBC)

• Red Blood Cells (RBCs): Carry oxygen throughout your body
• White Blood Cells (WBCs): Fight infections
• Platelets: Help blood clotting
• Hemoglobin and Hematocrit: Measure oxygen-carrying capacity

Basic Metabolic Panel (BMP)

• Glucose: Blood sugar levels
• Electrolytes: Sodium, potassium, chloride, bicarbonate
• Calcium: Important for bones and nerve function
• Kidney function: BUN and creatinine levels

Lipid Panel

• Total Cholesterol
• HDL ("good") Cholesterol
• LDL ("bad") Cholesterol
• Triglycerides

Preparing for Blood Tests

General Guidelines

1. Fast for 8-12 hours if required
2. Maintain proper hydration
3. Inform your doctor about medications
4. Avoid strenuous exercise before testing

Understanding Results

• Results typically include:
  • Your value
  • Reference range
  • Flag for abnormal results

When Are Blood Tests Needed?

• Annual check-ups
• Diagnosing conditions
• Monitoring existing conditions
• Medication management

Follow-Up Care

Discuss results with your healthcare provider to understand their significance and any necessary actions.