Introduction: The gold standard for diagnosing neurosyphilis (NS) is currently unavailable; various laboratory parameters in cerebrospinal fluid (CSF) and blood can assist in the diagnosis.
Methods: PubMed, Embase, and the Cochrane Library were searched. Studies utilizing laboratory tests to assist in the diagnosis of NS were included. The pooled indicators for diagnostic performance and their respective 95% confidence intervals (CIs) were calculated. We used the superiority index to test the superiority of a diagnostic test.
Results: Eleven citations were included in the study. Albumin quotient, CSF-TPHA, CSF-EIA, CSF-LDH, CSF-WBC, CSF-CXCL13, FTA-ABS, CSF-PCR, RPR, CSF-TPPA, TRUST, and CSF-venereal diseases research laboratory (VDRL) were assessed in the studies included. The pooled estimates of sensitivity, specificity, AUC of SROC and their respective 95% CIs for CSF-TPPA and CSF-VDRL were 0.97 (0.17, 1.00), 0.84 (0.62, 0.95), 0.93 (0.91, 0.95) and 0.74 (0.59, 0.85), 0.99 (0.93, 1.00), 0.94 (0.91, 0.96), respectively. CSF-TPHA demonstrated the highest relative sensitivity. CSF-VDRL manifested the highest specificity. CSF-TPHA, TRUST, CSF-VDRL, CSF-EIA, and RPR ranked in the top five laboratory tests with superiority index.
Conclusion: CSF-TPHA, TRUST, CSF-VDRL, CSF-EIA, and RPR indicate acceptable performance in detecting NS compared to other modalities. Comprehensive diagnostic strategies still play a significant role in the diagnosis of NS.
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