'buffy The Vampire Slayer' Star Michelle Trachtenberg's Official Cause Of Death Revealed

Michelle Trachtenberg's charismatic origin of death has been revealed arsenic complications from diabetes, authorities confirmed connected Wednesday. 

The New York City Office of Chief Medical Examiner confirmed to Fox News Digital that she died people of complications from glucosuria mellitus, citing laboratory results. 

The origin and mode of decease was amended aft a reappraisal of her laboratory trial results.

Her origin of decease had antecedently been listed as "undetermined."

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Michelle Trachtenberg's charismatic origin of decease has been revealed arsenic complications from diabetes, authorities confirmed connected Wednesday.  (Getty Images)

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Her family said aft her decease they didn't want an autopsy, and nan aesculapian examiner's agency agreed because foul play wasn't suspected. 

The "Gossip Girl" prima was found unresponsive successful her Manhattan flat connected Feb. 26. She was 39 years old.

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Trachtenberg began her profession successful Nickelodeon's "The Adventures of Pete and Pete." In 1996, she made her movie debut, playing nan title domiciled successful "Harriet nan Spy."

Michelle Trachtenberg began her profession arsenic a kid actress.  (Getty Images)

The character moved connected to prima arsenic Dawn Summers connected "Buffy nan Vampire Slayer" for 3 years. The bid ran from 1997-2003.

Trachtenberg had met Sarah Michelle Gellar, nan show's lead, while moving connected "All My Children" successful 1994, and nan 2 remained adjacent earlier nan character joined "Buffy" successful its 5th season.

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Trachtenberg was known for her domiciled connected "Buffy nan Vampire Slayer" alongside Sarah Michelle Gellar.  (Jean-Paul Aussenard/WireImage)

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"I had known Sarah since we worked together connected 'All My Children,'" Trachtenberg antecedently told nan BBC. "We worked together for astir 2 and a half years, and we had kept successful touch done nan years erstwhile she moved to Hollywood and began building her profession from that point."

Trachtenberg gained further fame arsenic Georgina Sparks connected "Gossip Girl." She starred alongside Blake Lively, Leighton Meester, Ed Westwick, Chace Crawford and Penn Badgley connected nan deed play series.

She besides starred successful "The Ice Princess" and "EuroTrip."

Fox News Digital's Tracy Wright and Lauryn Overhultz contributed to this report.