Below is the FDA information released by Astra Zeneca regarding this very issue
Patients with risk factors for diabetes mellitus
(eg, obesity, family history of diabetes
) who are starting treatment with atypical antipsychotics should undergo fasting blood glucose testing at the beginning of treatment. Any patient treated with atypical antipsychotics should be monitored for symptoms of hyperglycemia including polydipsia, polyuria, polyphagia, and weakness.