New Molecular Assay Provides Simple, Efficient Way to Detect Clostridium difficile


BD Diagnostics, a segment of BD (Becton, Dickinson and Company), announces it has received FDA clearance to market the BD MAX Cdiff Assay in the United States. The assay is performed on the fully-automated BD MAX System and is designed to rapidly and accurately detect the toxin B gene (tcdB), which has been shown to be essential to cause disease, in patients suspected of Clostridium difficile infection (CDI).

Rapid, accurate identification of patients with CDI enables timely and appropriate therapy and infection control interventions to prevent the spread of this infection in healthcare institutions. Use of molecular testing has been proven to reduce the number of healthcare facility-associated cases of CDI.(1) The assay was CE-marked in March 2012 and has demonstrated excellent performance in Europe.(2)

The BD MAX Cdiff assay is a simple, easy-to-use, fully-automated method for detection of these dangerous bacteria, says Tom Polen, president of BD Diagnostics Diagnostic Systems. FDA clearance of the BD MAX Cdiff assay gives our customers the ability to balance productivity and cost as they perform laboratory testing for an expanding menu of infectious diseases.

According to the Centers for Disease Control and Prevention (CDC), CDI is a growing threat in hospitals, nursing homes and other healthcare settings. Infection rates are at historically high levels, killing 14,000 Americans each year and adding more than $1 billion in excess costs to the healthcare system. The National Action Plan to Prevent Healthcare-Associated Infections is targeting a 30 percent reduction of CDI rates, which may be prevented through a combination of infection control interventions and appropriate use of antibiotics.(3)

The BD MAX Cdiff assay is the third FDA-cleared assay on the BD MAX System. Other available assays include BD MAX MRSA for the detection of methicillin-resistant Staphylococcus aureus and BD MAX GBS for the detection of Group B Streptococcus. Both assays were categorized by FDA as CLIA Moderate Complexity tests. This latest milestone represents further confirmation of BDs commitment to rapidly expand its menu, offering laboratories a broad range of molecular tests that meet both their current and future clinical needs.

Source: BD

1. Catanzaro et al., 2012 Real-time polymerase chain reaction testing for Clostridium difficile reduces isolation time and improves patient management in a small community hospital. AJIC 40:663-666
2. Le Guern et al., 2012 Evaluation of a New Molecular Test, the BD Max Cdiff, for Detection of Toxigenic Clostridium difficile in Fecal Samples. J. Clin. Microbiol. 2012, 50:3089-3090
3. MMWR. March 9, 2012. Vital Signs: Preventing Clostridium difficile Infections


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