Molecular-based Testing for Sexually Transmitted Infections Using Samples Previously Collected for Vaginitis...

Area of Science:

• Gynecology
• Infectious Diseases
• Molecular Diagnostics

Background:

• Vaginal symptoms are a common reason for women's primary care visits.
• Current laboratory testing practices vary by clinic, potentially leading to incomplete STI or vaginitis workups.
• This disparity can result in missed diagnoses and suboptimal patient management.

Purpose of the Study:

• To assess the prevalence of STIs in women presenting with vaginitis symptoms.
• To evaluate the utility of molecular diagnostic assays for comprehensive STI and vaginitis testing.
• To determine the concordance of specific STI test results between different molecular assays.

Main Methods:

• A molecular diagnostic assay (BD MAX CT/GC/TV) was used to test samples for Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis.
• Positivity rates for these STIs were calculated in women with vaginitis symptoms.
• Concordance for T. vaginalis detection was compared between two molecular assays.

Main Results:

• Women with bacterial vaginosis or Candida infections showed high rates of STI coinfection (24.4%-25.7%).
• Samples negative for vaginitis had significantly lower STI positivity rates (7.9%).
• T. vaginalis detection was highly concordant between the two molecular assays tested.

Conclusions:

• Women experiencing vaginitis symptoms are at increased risk for STIs.
• Comprehensive molecular testing offers broad diagnostic coverage for symptomatic women.
• Implementing molecular diagnostics can enhance patient management across different clinical settings.