Blood tests are an important diagnostic tool for heart disease that can help check levels of key substances like sodium and potassium that affect heart function. While fatigue is a common symptom of heart problems, blood tests alone cannot definitively diagnose the cause of fatigue.
Common blood tests for heart disease Show Full Answer
Blood tests are an important diagnostic tool for heart disease that can help check levels of key substances like sodium and potassium that affect heart function. While fatigue is a common symptom of heart problems, blood tests alone cannot definitively diagnose the cause of fatigue.
Common blood tests for heart disease include:
• Basic metabolic panel to check electrolytes
• Complete blood count
• Thyroid function tests
• Liver and kidney function tests For an accurate diagnosis of what's causing fatigue symptoms, doctors typically need to perform multiple tests beyond just blood work, such as:
• Electrocardiogram (ECG/EKG)
• Echocardiogram
• Stress tests
• Chest X-rays
• Cardiac catheterization if needed
This comprehensive testing helps determine if fatigue is related to heart function and guides appropriate treatment plans.
October 9, 2025