Calling Adapter Service from Portlet

Hi Guys, Is it possible to call an adapter service in IS from a portlet or does it need to be wrapped with a flow service? Specifically I want to call a service(adaptor or flow) to fill a dropdown box. Thanks

It is always recommended to wrap any adapter services as flow services in IS before consume them from CAF application

Alex

Cool thanks for the info so now I will ask more, are there any best practices/patterns for this technique?