Who and when to test


Why test? 

Chlamydia is the most common bacterial STI in Australia. Over 100,000 chlamydia infections are diagnosed annually, 73%  among people aged 15-29 years.1

Who and when to test

Australian STI Management Guidelines recommend testing those at risk of chlamydia, including:

  • Sexually active people aged under 30 years
  • Men who have sex with men
  • Aboriginal and Torres Strait Islander people
  • People who inject drugs
  • Sex workers
  • Pregnant people
  • Trans and gender diverse people
  • People with a known exposure to an STI or history of an STI in the past 12 months
  • Sexual partner/s of those listed above

For more information about who and when to test, see STI/HIV Testing Tool (PDF). 

Opportunistic testing

Need some help bringing up opportunistic STI testing? Here are some suggestions for you*:


*These testing one-liners are from the STI/HIV Testing Tool (PDF), and GPs who participated in the MoCCA project (used here with their permission). 

Patient resources about testing

For a factsheet about chlamydia for your patient, including information about testing

Chlamydia Factsheet

For all patient resources, click below

Patient resources

General Practice resources about testing

For more information about testing, including step-by-step advice on offering routine STI testing in different consultations: 

STI/HIV Testing Tool (PDF)

For all General Practice resources, click below

General Practice resources

Key guidelines for chlamydia case management

For information about the entire chlamydia case management pathway, including specimen collection: 

Australian STI Management Guidelines  

For who and when to test, including in specific populations: 

RACGP Red Book Guidelines for Preventive Activities in General Practice 



MoCCA is funded by the National Health and Medical Research Council (APP1150014) and is a collaboration between the University of Melbourne and our project investigators and partner organisations in Victoria, New South Wales and Queensland. Click here for a list of our collaborators.

The information on this website was last updated in June 2024. 

We acknowledge and pay respect to the Traditional Owners of the lands upon which this research is being conducted.