tokens: RESULTS : Verapamil significantly increased PRL levels in healthy controls ( N . 8 , PRL : 183 % ) , macroprolactinoma ( N . 8 , PRL : 7 % ) , microprolactinoma ( N . 19 , PRL : 21 % ) , macroprolactinemia ( N . 23 , PRL : 126 % ) , but not in pseudoprolactinoma ( N . 8 , PRL : 0 . 8 % ) , and risperidone - induced hyperprolactinemia ( N . 7 , PRL : 3 % ) .