Patients Home / Patients About Our Test Learn about our Test and why you should get the test. Find a Practitioner Find a Practitioner in your area who has BDL test available for you. How to Collect Sample Online instruction on how to collect the saliva sample. Resources Documents Read great resources about our products and test. Terms & Conditions Read our Terms and Conditions concerning the saliva(s) hormones, OTS Fitness, Weight Management Profile and the release of results.