The 17-year-old singer has vehemently denied being the father of fan Mariah Yeater`s four-month-old son and wanted to prove his innocence by undergoing DNA testing.
According to website TMZ, Justin took the test at a lab on Friday (18.11.11) under "very controlled circumstances", which means it will be hard for Mariah or her lawyer to challenge it.
Justin`s team will not settle or even discuss settlement with Mariah or her legal team and it is now up to her to provide DNA results from her son.
Although Mariah dropped her lawsuit against the `Baby` hitmaker, her lawyer stated they planned to pursue the matter privately
Justin previously revealed he was happy to take a DNA test to prove his innocence but insisted he would not "waste" his time meeting his accuser face-to-face because her fabricated claims were vindictive.
Justin - who is currently dating Selena Gomez - said: "All this stuff is dealt with by my legal team. But if they want me to (take a paternitytest) then I will."
When asked what he would say to Mariah if he could meet her, he said: "Nothing, I wouldn`t waste my time. I guess [she`s done this] for attention, but it`s not something I am interested in. These people are not worth my thought or time."