A DIY test for the most common sexually transmitted disease, chlamydia, is being made available through the post by NHS Grampian.
The DIY tests are then sent back for the results
The test kits can now be picked up at more than 20 youth centres, colleges and pharmacies.
The samples are then sent back for the results.
Sexual health clinical lead for Grampian, Dr Gillian Flett, said: "Concern is growing about young people contracting infections."
Failure to treat chlamydia can result in long-term health problems for the person who has it and for the people that they have sex with.
Once any infection has been diagnosed, it can be treated with antibiotics.