This is the foundational, trusted method for diagnosing bloodstream infections (sepsis). This test is used to detect aerobic bacteria (germs that require oxygen) circulating in your blood. A blood sample is collected and placed in a specialized nutrient broth, which is then incubated and personally monitored by our expert microbiologists. While automated systems are fast, this classic, conventional technique is a reliable and proven gold standard. It is essential for identifying the bacterial cause of a serious fever or illness, providing the definitive information your doctor needs to select the correct, life-saving antibiotic.