During her project Yvonne found two samples which contained cannabis and six products that contained substances that mimic the effects of cannabis.
She said: 'There is a lack of information about legal highs and specifically their exact contents. Sometimes what is in them can in fact be as dangerous as illegal drugs.
'This has been a really interesting project that will hopefully lead to more people being aware of the dangers of legal highs.'
Yvonne, 26, is originally from Glasgow but now lives in Ingleby Barwick. Her future plans include progressing on to a PhD which will allow her to continue her research and eventually become a lecturer.
She added: 'The course at 海角直播 has really inspired me and I have had a fantastic experience here.
'I really enjoyed graduation. It was an incredibly proud moment 鈥� my husband and parents were there 鈥� I just wish my dog was allowed to come along as well.'