There are a number of ways you may consider being a part of a clinical trial.
Clinical Trial On-line Registries
If you would like to find a clinical trial specific to a certain condition suitable for you then you can search the directories for trials currently underway. The 2 directories that lists trials being run in Australia are the Australia New Zealand Clinical Trial Registry and Clinicaltrials.gov
The Cancer Institute NSW also has a listing of cancer clinical trials being run at various centres across NSW. To find a cancer clinical trial search their clinical trials listing.
These directories will provide you with some information and who to contact regarding the trial but it is important to speak to your doctor to consider if this trial is right for you.
Volunteer for a Clinical Trial
Healthy volunteers are often needed and there are a number of research institutes and services in NSW that require participants: