Pericardial effusion is abnormal accumulation of fluid in the pericardial cavity. A pericardial fluid culture is a test performed on a sample of fluid from the sac surrounding the heart. It is done to identify organisms that cause infection.
A normal result means no infectious organisms are found in the fluid sample.
Abnormal results may be due to an infection of the pericardium. The specific organism causing the infection may be identified. More tests may be needed to determine the most effective treatments.