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Updated: Sep 29, 2025

Author Spotlight: Optimizing Scorpion Venom Extraction for Antivenom Production
Published on: October 6, 2023
Antivenom Does Not Cause Snakebite Complications, Withholding It Does
Charles J Gerardo1, Andrew W Godfrey1, Spencer Greene2
1Department of Surgery, 12277Duke University School of Medicine, Durham, NC, USA.
Insights
Crotalidae Polyvalent Immune Fab (Fab) antivenom is effective for snakebites, particularly in mild cases. Further US-based cost-effectiveness studies are needed to align with global findings and RCT evidence.
Area of Science:
- Toxicology
- Pharmacology
- Clinical Medicine
Background:
- The efficacy of US snake antivenoms, specifically Crotalidae Polyvalent Immune Fab (Fab), is well-established.
- A randomized double-blind placebo-controlled clinical trial (RCT) confirmed Fab antivenom efficacy using patient-centered outcomes.
Discussion:
- The retrospective study by Bowden et al. warrants discussion due to potential discordance with existing RCT evidence.
- While global cost-effectiveness of antivenom is demonstrated, US-specific studies are lacking.
Key Insights:
- Fab antivenom benefits were observed in a predominantly mildly envenomated population in a time-dependent manner.
- Patient-reported outcomes and return of functionality are key indicators of antivenom efficacy.
Outlook:
- Further research is needed to establish the cost-effectiveness of Fab antivenom in the US.
- Aligning evidence from retrospective reviews with RCTs is crucial for clinical practice guidelines.
Abstract:
We read with interest the retrospective chart review "Crotalidae Polyvalent Immune Fab and Cost-Effective Management of Hospital Admission for Snakebites" by Bowden, et al. The efficacy of US snake antivenoms has been well established for decades. A randomized double-blind placebo-controlled clinical trial (RCT) has demonstrated Fab antivenom efficacy using patient-centered outcomes such as return of functionality and other patient-reported outcomes. These benefits occurred in a predominantly mildly envenomated patient population in a time-dependent manner. The cost-effectiveness of snake antivenom has been demonstrated globally, but no US cost-effectiveness studies have been published. Based on the evidence hierarchy of evidence-based medicine, the discordance between this study and the RCT merits discussion.
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