History Main / DaddyDNATest

** When [[https://www.youtube.com/watch?v=kXd1RoDSSgo Tachibana]] hears a rumor that Azami isn't her daughter, he does a DNA test on her and gets a zero percent match. It turns out that Akane cheated on him with Hiiragi.

* Interesting twist in ''ComicStrip/SafeHavens'': Samantha runs a genetic profile on her daughter Maria. She has no doubts at all about Maria's parentage, but she ''is'' a geneticist by profession so naturally she's curious about what's in her daughter's DNA. However she keeps getting Maria's profile mixed up with the ''other'' Maria's-Maria the time traveler-because they're identical...and she freezes as the implications sink in.

* A regular (usually weekly) occurrence at family courts around the world. [[SurprisinglyRealisticOutcome It's usually not usually that dramatic]]; the results are less "[[Series/{{Maury}} You are the father!]]" and more "DNA testing ordered by this court on June 17, 2016 and conducted June 30, 2016 shows a 99.5% probability that the defendant is the father of the child. The court is therefore satisfied of defendant's paternity of the child and enters an order of paternity. Child support is set at $65 per week with $18 per week arrears payable through Probation. . . ."

* The titular heroine of ''Series/VeronicaMars'' suspects at one point that her real father is her ex-boyfriend Duncan's dad, so she runs a paternity test, which [[UnReveal she shreds without reading]], deciding she doesn't need to know. Later in the season, Keith Mars has his own test done, [[spoiler:which confirms that he is, after all, her real father]]. This is also why [[spoiler:Duncan doesn't talk about the night he and Veronica (who was drunk and roofied at the time) had sex for the first time. He assumes it's because both of them are ashamed of BrotherSisterIncest. In fact, Veronica simply doesn't remember]].

* Parodied on ''{{Series/Dinosaurs}}'': due to a mix-up, it's suggested that the Sinclairs accidentally got another family's egg (the one that hatched into Baby) while the other family, who look more like Baby, got theirs, which looks more like the Sinclairs. Earl and the other father are subjected to battery after battery of bizarre tests (including a centrifuge)... and then the doctor just takes the blood test anyway. The test said the eggs were switched but it was later revealed it was a mistake.

* Parodied on ''{{Series/Dinosaurs}}'': due to a mix-up, it's suggested that the Sinclairs accidentally got another family's egg (the one that hatched into Baby) while the other family got theirs. Earl and the other father are subjected to battery after battery of bizarre tests (including a centrifuge)... and then the doctor just takes the blood test anyway. The test said the eggs were switched but it was later revealed it was a mistake.

** Amanda attempts this on Bradford Meade when she suspects him of being her real father. [[spoiler:He isn't.]]

** Daniel Meade receives a letter telling him he is the father of Daniel Jr., the child of a French model he met years ago on a business trip. The paternity test reveals [[spoiler:that Daniel Jr.'s father is Alexis Meade, now Daniel's sister.]]

The only case in which this would not work is if two or more identical siblings or clones are potential fathers to the child; having the same DNA, the test results would be the same for them.

Almost always happens at some point after a LukeIMightBeYourFather revelation. Also happens if a woman decides to have MySecretPregnancy. The TropeBreaker for MamasBabyPapasMaybe.

* On ''Website/NotAlwaysRelated'', [[https://notalwaysright.com/love-is-in-their-dna/237945/ a young man's flighty ex-girlfriend leaves him a child]], which his father assumes is not actually his although the rest of the family eventually bonds with her. Determined to prove it, he takes his "granddaughter" to get tested behind his son's back, starting a fight that drives them apart for months, then interrupts his own wife's birthday party with an "I TOLD YOU SO" cake and the unopened test results... which are positive for a match. The submitter describes him [[MyGodWhatHaveIDone dying a little inside]] upon reading it.

* ''Series/TheRepublicOfSarah'': Corinne gets a paternity test done for Josh, her son, as she's unsure whether Danny or Adam is his father. [[spoiler:It turns out Adam is.]]

* In ''Series/UglyBetty'', Daniel Meade receives a letter telling him he is the father of Daniel Jr., the child of a French model he met years ago on a business trip. The paternity test reveals [[spoiler:that Daniel Jr.'s father is Alexis Meade, now Daniel's sister.]]

* A regular (usually weekly) occurrence at family courts around the world. [[SurprisinglyRealisticOutcome It's usually not usually that dramatic]]; the results are less "[[Series/{{Maury}} You are the father!]]" and more "DNA testing ordered by this court on June 17, 2016 and conducted June 30, 2016 shows a 99.5% probability that the defendant is the father of the child. The court is therefore satisfied of defendant's paternity of the child and enters an order of paternity. Child support is set at . . . ."

* A regular (usually weekly) occurrence at family courts around the world. [[RealityEnsues It's usually not usually that dramatic]]; the results are less "[[Series/{{Maury}} You are the father!]]" and more "DNA testing ordered by this court on June 17, 2016 and conducted June 30, 2016 shows a 99.5% probability that the defendant is the father of the child. The court is therefore satisfied of defendant's paternity of the child and enters an order of paternity. Child support is set at . . . ."

* In an episode of ''Series/MalcolmInTheMiddle'', Lois discovers that her father, Victor, had a secret family with a woman named Sylvia (played by Creator/BettyWhite), and Ida, Lois' mother, was planning to sue her for Victor's tiny pension, despite the result being financial ruin even if she won. Lois tried to talk to Sylvia to hand over the pension, so that Ida would have one final memory of her lat husband and leave her alone, but Sylvia refuses out spite for Ida. Lois decides to back up Ida's lawsuit, and as they're preparing the evidence and court documentation, Lois gets the [=DNA=] test the lawyer advised her to take, and is shocked to discover that Victor is not her biological father, and Ida theorizes that the most likely candidate was a guy from the old country who could walk upstairs on his hands, and admits that [[MamasBabyPapasMaybe Susan, Lois' sister, may have been fathered by another man as well.]]

* ''WesternAnimation/JusticeLeagueUnlimited'': In "Epilogue", the elderly Bruce Wayne needs a new kidney. [[WesternAnimation/BatmanBeyond Terry McGinnis]] checks himself for compatibility, and finds that he's a perfect match. Suspicious, Terry has a test done and discovers he is Bruce's biological son, which drives the rest of the episode.

* ''Literature/TheresMoreThanOneWayHome'': [[spoiler:Anna spends two years believing that Alex has had a vasectomy, meaning Marissa's father is Val. When she learns that in fact he was fertile the entire time, she suggests a DNA test, but Alex doesn't care about Marissa's paternity.

* Interesting twist in ''ComicStrip/SafeHavens'': Samantha runs a genetic profile on her daughter Maria. She has no doubts at all about Maria's potential parentage at all, but she ''is'' a geneticist by profession so naturally she's curious about what's in her daughter's DNA. However she keeps getting Maria's profile mixed up with the ''other'' Maria's-Maria the time traveler-because they're identical...and she freezes as the implications sink in.