One of the most powerful tools in modern public health management is the GeneXpert system. It is a fully automated and integrated molecular diagnostic system that has revolutionized the diagnosis of tuberculosis (TB) and other diseases. A crucial factor in maximizing the value of this tool lies in understanding and optimizing GeneXpert module utilization.
What is GeneXpert Module Utilization?
GeneXpert module utilization is a measure of how much a GeneXpert machine is being used relative to its total capacity. In other words, it is the proportion of time that a GeneXpert module is actually running tests out of the total time it could potentially be running tests.
Factors Affecting Utilization
Several factors can affect module utilization. These include the volume of samples being tested, the availability and scheduling of staff, the reliability of electricity and other infrastructure, the speed and reliability of the supply chain for test cartridges, and the operational status of the machine itself.
Different Types of Utilization: Gross vs. Effective
There are two main ways to calculate module utilization, each providing a different perspective on machine usage:
Gross Utilization: This measure includes all days, regardless of whether the module was functional or not. It is calculated by dividing the total number of tests performed by the total capacity of the module over a specific period of time.
Effective Utilization: This measure excludes days when the module was non-functional. It is calculated by dividing the total number of tests performed by the total capacity of the module over the number of days the module was operational.
Each approach has its pros and cons. Gross utilization provides a holistic view of the machine's usage, including any downtime due to technical issues or other reasons. However, it might underestimate the module's usage if there were many non-operational days. On the other hand, effective utilization provides a measure of the machine's usage under optimal conditions but can overestimate utilization if there are frequent disruptions in operation.
GeneXpert Connectivity System Requirements for Calculating Utilization
In order to calculate either gross or effective utilization, a GeneXpert connectivity system is needed. This involves installing some software on the GeneXpert machine and setting up a modem/router with SIM cards for local data service. This enables the machine to transmit data on the number of tests performed, the operational status of the machine, and other relevant information to a centralized database
These systems like MedX Surveillance, can be set up in just a few minutes and typically require only a local technician and some streamlined remote training. Once in place, they enable public health program managers to monitor module utilization in real time, identify issues that may be affecting utilization, and take steps to optimize the use of their GeneXpert machines.
Conclusion
Understanding and optimizing GeneXpert module utilization is a crucial aspect of effective public health program management. By carefully monitoring both gross and effective utilization, and by taking steps to address the factors that can impact these measures, program managers can ensure that their GeneXpert machines are being used as efficiently and effectively as possible. This, in turn, can help to improve the speed and accuracy of disease diagnosis, contributing to better health outcomes for the communities they serve.