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Justin Bieber

DNA Test Is In the Bag

11/21/2011 10:23 AM PST BY TMZ STAFF

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Justin Bieber
took a DNA test on Friday night in New Jersey, and now it's baby mama's move ... TMZ has learned.

We've learned ... Justin took the test at a lab under "very controlled circumstances."  We're told there is a solid chain of custody, so it's going to be hard for Mariah Yeater or her lawyer to challenge it.

As we first reported, Justin's team will NOT settle or even discuss settlement with Yeater or her lawyer.  It's now up to her to provide DNA results from Mariah's baby.

Justin has vowed to sue Mariah and her lawyers once he establishes he's not the daddy.

Mariah's lawyer was unavailable for comment.

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