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Twenty-minute whole blood clotting test. Blood taken from a patient envenomed by a Papuan taipan (Oxyuranus scutellatus) remains incoagulable after standing undisturbed in a glass tube for 20 minutes. The patient with venom-induced consumption coagulopathy continues to bleed from razor cuts made inadvisedly at the site of the bite
(© David A. Warrell).
