More than half (59.4%) of the human cases were suspected accidental poisonings, 23.2% were intentional poisoning or recreational abuse, 11.1% were therapeutic errors and 6.3% had another or unknown intent. A larger proportion of enquiries between 10pm and 8am were about intentional poisoning (47.2% vs 17.0% between 8am and 10pm) reflecting the pattern of presentations to hospital emergency departments.