Which crystal is most commonly associated with ethylene glycol poisoning?

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Ethylene glycol poisoning leads to the formation of oxalate, which binds calcium to create calcium oxalate crystals that can appear in the urine and contribute to kidney injury. The crystal form most commonly linked to this poisoning is calcium oxalate monohydrate, making it the strongest urinalysis clue for exposure. Bilirubin crystals would point to liver or biliary disease, not ethylene glycol toxicity, and trichomonas organisms are a microbe, not crystals. While calcium oxalate dihydrate crystals can be seen in various conditions, the monohydrate form is the pattern most frequently associated with ethylene glycol ingestion in toxicology contexts.