pH

pH measures the acidity or alkalinity of pericardial fluid (fluid surrounding the heart). Normal pericardial fluid is slightly alkaline. Abnormal pH levels may indicate infection, inflammation, or metabolic disturbances affecting the heart. Low pH (acidic) may suggest bacterial infection or ischemia, while high pH may indicate fungal infection or other conditions. This test is part of comprehensive pericardial fluid analysis to diagnose serious cardiac conditions.