MVPlex Assay for Direct Detection of Methicillin-Resistant Staphylococcus aureus in Naris and Other Swab Specimens

We evaluated the MVPlex assay (Geneco Biomedical Products), which uses target-enriched multiplex PCR amplification followed by liquid array identification, for the detection of methicillin-resistant Staphylococcus aureus (MRSA) from 307 dual-swab specimens. By using a combination of culture (Trypticase soy agar-5% sheep blood agar and Columbia CNA agar-5% sheep blood) and an FDA-approved MRSA PCR assay as the "gold standard," the MVPlex MRSA assay and culture were found to have sensitivities of 97.8% and 84.4% (P = 0.002) and specificities of 95.8% and 98.6% (P < 0.05), respectively.