Canadian MPTFs are unable to meet clinical demands of patients suffering from chronic pain, both in terms of regional accessibility and reasonable wait time for patients' first appointment.

There are very few pediatric MPTFs in Canada. These facilities exist in five of ten provinces, each within large urban centres. Limited accessibility leads to variable and prolonged wait times for pediatric patients suffering from chronic pain.

Different health care professionals play a variety of important roles in MPTF in Canada. However, few of them are involved on a full-time basis and the extent to which pain is assessed and treated in a truly multidisciplinary manner is questionable.

1. Hydromorphone-3-glucuronide, dihydromorphine, dihydroisomorphine, dihydromorphine-3-glucuronide and dihydroisomorphine-3-glucuronide were isolated from a cancer patient's urine and identified as metabolites of hydromorphone by comparison with synthetic standards using LC/MS/MS with gradient elution. 2. The relative urinary recovery of dihydroisomorphine-3-glucuronide was estimated to be 17-fold higher than previously reported. 3. Three new metabolites, including hydromorphone-3-sulphate, norhydromorphone and nordihydroisomorphine, were tentatively identified.

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