Identifying the cause of bone and joint infections, such as those near implants or in bones, can be difficult with standard methods. This review looked at different laboratory tools used to find these infections, including blood tests, fluid markers, and advanced molecular testing.
Researchers found that while blood tests are helpful for initial screening, they can sometimes be confused by other types of inflammation. In contrast, specific biomarkers in joint fluid, like calprotectin and alpha-defensin, showed high accuracy in identifying infection sites. Additionally, using a technique called sonication on tissue samples helped doctors find bacteria hidden inside biofilms that standard tests often miss.
New molecular tools, such as multiplex PCR and metagenomic sequencing, also expanded the ability to detect infections that do not grow in traditional cultures. Because this is a narrative review of current laboratory techniques rather than a clinical trial, these findings represent the current state of science. Patients should talk to their doctors about how these advanced diagnostic tools might be used in their specific care plans.
