You may have content matching performed alongside with your website regular test to ensure the correctness of the site. It means that the test will succeed only in case if response time is not greater than specified threshold and if the specified words are found within that page.To add a website test with the content to be checked, open the window for adding external monitor. Specify test related information, check website as test type, specify protocol and type and enter content.
Content matching feature is available for password protected sites as well. It means you can use corresponding method of HTTP and HTTPS protocol to check the content of the page after login. For that in the Add Checks window you have to check POST (when you click on POST, field will appear to enter data) as a request type and in the specify content and login parameters in the provided text areas.