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A controlled comparison of the BacT/ALERT® 3D and VIRTUO™ microbial detection systems
Summary
The new BacT/ALERT® VIRTUO™ Microbial Detection System offers faster time to detection and a higher detection rate for microorganisms compared to the BacT/ALERT® 3D system, ensuring quicker sepsis diagnosis.
Area of Science:
- Clinical Microbiology
- Medical Technology
- Infectious Disease Diagnostics
Background:
- The BacT/ALERT® 3D system is a standard in microbial detection.
- Advancements in diagnostic technology are crucial for timely patient care.
Purpose of the Study:
- To compare the performance of the next-generation BacT/ALERT® VIRTUO™ Microbial Detection System with the existing BacT/ALERT® 3D system.
- To evaluate differences in limit of detection (LoD) and time to detection (TTD).
Main Methods:
- A seeded limit of detection (LoD) study was conducted for various BacT/ALERT® Plus and Standard bottles on both VIRTUO™ and 3D systems.
- A seeded study compared time to detection (TTD) using clinically relevant microorganisms inoculated at or near LoD with varying blood volumes (0, 4, 10 mL).
Main Results:
- Both systems demonstrated comparable LoD, detecting organisms at nearly identical levels (<10 CFU/bottle).
- The VIRTUO™ system showed a significantly faster TTD (average 3.5 hours faster) and a higher detection rate (99.9% vs. 98.8%, p<0.05) compared to the 3D system.
Conclusions:
- The BacT/ALERT® VIRTUO™ Microbial Detection System provides enhanced performance over the BacT/ALERT® 3D system.
- VIRTUO™'s improved TTD and detection rates can lead to earlier sepsis diagnosis and treatment.
