INDOPACOM – Snake Identification Tips

In some parts of Asia, bedside antivenom selection sometimes depends on a presumptive snake ID. When ID is required, the objective is not perfect certainty - it is to make a timely and evidence-based “best guess” that allows treatment to proceed. Do not delay lifesaving antivenom in pursuit of 100% certainty. Providers are advised to contact the DoD ADVISOR line and request a toxicology consult as soon as possible.              

DoD ADVISOR: +1 (833) 238-7756 / DSN: (312) 429-9089 |Request Toxicology Consult

Core principles

• Safety first: Never encourage patients, bystanders, or staff to chase, capture, kill, or handle a snake to aid identification. Even a severed head can reflex bite and inject venom for hours. Treat any snake—alive or dead—as capable of causing envenomation.
• If photos or a specimen available: contact DoD advisor toxicologist for ID assist.
• Don’t let ID delay care. Stabilize airway, breathing, and circulation; start syndrome guided management; and use the regional algorithm. Reassess the presumptive ID as new information emerges.
• Use a weighted evidence approach. When photos or a specimen are not available, combine: (1) place (geography, habitat, elevation), (2) snake description/behavior if seen, (3) circumstances of the bite, and (4) clinical syndrome at the bedside. The combination is usually more reliable than any single element.
• Start with the info embedded in the AV Rapid Reference table and the regional Antivenom Algorithm: INDOPACOM AOR within the CPG (see next section for details and screenshots).