Lindsay Lohan's father took a DNA test on Monday to find out if he's the father of a Montana teen as the first photos of his alleged 13-year-old daughter, Ashley, were made public.
"It was a swab, a paternity test," Michael Lohan told the New York Post.
Michael Lohan admitted last week that he had a fling with Ashley's mom, 44-year-old Montana massage therapist Kristi Kaufmann, in 1995, when he was separated from Lindsay's mom, Dina.
But he still doubts Kaufmann's claims that the girl is his.
"If the test is found to be negative she's gonna be sued for libel and defamation," he told the Post.
Michael Lohan said he didn't know Ashley existed until Kaufmann — whom he first met in 1982 in Houston, Texas — contacted him while he was serving prison time in 2005 for DUI and other charges.
"She contacted me and said she had a paternity test with her ex-husband and it was negative and she believed the child was mine," said Lohan. "She said I was the only one she was with but I find that hard to believe. She was with a number of men after me and was going through a second divorce right now."
OK! magazine, for which Michael Lohan has written a blog, first reported the story.