# It is time to have a molecular test for diagnosing Kingella kingae infections in the lab!

## TL;DR

A new molecular test for diagnosing Kingella kingae infections in children could improve treatment with targeted antibiotics.

## Contribution

A novel PCR assay targeting Kingella kingae's outer membrane protein gene was developed for accurate diagnosis.

## Key findings

- The PCR assay confirmed Kingella kingae as a key cause of skeletal infections in preschoolers.
- The test allows for targeted antibiotic therapy, improving clinical management.
- A commercial version of the test is expected to soon receive FDA approval.

## Abstract

The article by S. J. Oyeniran, A. L. Leber and H. Wang (J Clin Microbiol 63:e00986-25, 2025, https://doi.org/10.1128/jcm.00986-25) describes a novel laboratory-developed diagnostic PCR assay that amplifies the gene encoding Kingella kingae’s major outer membrane protein. The test confirmed the prime role of the organism causing skeletal system infections in preschoolers and enabled the administration of targeted antibiotic therapy. It is hoped that a much-needed commercial K. kingae-specific molecular test will soon receive FDA clearance to improve the management of pediatric osteoarticular infections.