NAAT for Neisseria gonorrhoeae and Chlamydia trachomatis is the preferred diagnostic method over culture. An important limitation of NAAT for N. gonorrhoeae is:

• A Lower sensitivity than culture for urogenital specimens
• B Failure to detect C. trachomatis in the same multiplex assay
• C Inability to test urine specimens
• D Inability to detect non-gonococcal Neisseria species from pharyngeal samples (risk of false positives) ✓

Explanation

A critical limitation of gonococcal NAAT is cross-reactivity with commensal Neisseria species (N. subflava, N. cinerea, N. lactamica, N. meningitidis) in pharyngeal specimens, leading to false-positive results. These commensals share significant genomic homology with N. gonorrhoeae. Culture remains preferable for pharyngeal gonorrhoea diagnosis in high-specificity contexts (medicolegal, screening programmes) or where confirmation is needed. NAAT sensitivity is superior to culture for urogenital specimens and urine is a validated matrix for most approved assays.

Reference: Ananthanarayan & Paniker's Textbook of Microbiology, 11th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.