Khloe Kardashian was left ecstatic after undergoing a medical test that revealed what her biological age really is.

The 40-year-old shrieked with glee after she received her results on the latest episode of the Hulu series The Kardashians.

She and her family members took the examination to find out whether they had the bodies of people younger or older than they actually are.

In a twist that left her relations in shock, Khloe emerged triumphant, with the biggest gap between her chronological and biological age.

‘Shut up! Wow!’ Khloe screamed, before telling her fans in a confessional: ‘This is the best test I’ve ever taken in my f***ing life!’

Khloe Kardashian was left ecstatic after undergoing a medical test that revealed what her biological age really is

Khloe’s was informed that she had a biological age of just 28, more than a decade younger than her real milestone age of 40.

She felt especially jubilant because her elder sister Kim Kardashian, 43, also took the examination and had a biological age of 34.

The result meant Kim had only a nine-year gap between her biological and chronological age, while Khloe had a more impressive 12-year gap.

‘Never in a million years…’ Khloe marveled in her confession. ‘Like if I had to bet money, I never would have bet on myself. I would have completely lost the bet. Kim is livid, by the way, like I know she’s p***ed.’

‘For sure I’m p***ed,’ Kim admitted during her own confessional after hearing Khloe’s news. ‘I always want to be the highest achiever.’

Khloe noted how pleased she was with her result in view of the fact that she was regarded as the chubby sister when the family first shot to superstardom on their E! reality series Keeping Up With The Kardashians.

‘The world needs to know that me, the fat one, is now better than the best one,’ Khloe said, once again comparing herself to Kim.

‘She was always like: “I’m the princess,” or whatever her tagline was. And my tagline on Keeping Up was: “I’m the fat funny sister,” if you look at the opening of the show.’

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Khloe’s was informed that she had a biological age of just 28, more than a decade younger than her real milestone age of 40; pictured on her Instagram this April

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Khloe, who embarked on a stunning weight loss journey years ago, crowed: ‘The fat funny sister is 12 years younger than her chronological age’; pictured this year

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Khloe took the test with (from left) her sister Kim, their mother Kris Jenner and Scott Disick, the former fiancé of Kim and Khloe’s elder sister Kourtney Kardashian

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‘Shut up! Wow!’ Khloe screamed, before telling her fans in a confessional: ‘This is the best test I’ve ever taken in my f***ing life!’

Khloe, who in more recent years embarked on a stunning weight loss journey, crowed: ‘The fat funny sister is 12 years younger than her chronological age.’

Dr. Matt Dawson, CEO of the company TrueDiagnostic that performed the Kardashians’ tests, let Khloe know just how staggering her result actually was.

‘There is a global competition on self-rejuvenation, and right now you would be number seven in the world,’ Dr. Matt told the family in a video call.

Khloe began running around the sofa bellowing: ‘I’ve never won anything,’ as Kim attempted to conceal her twinge of envy.

Before she was told how she had done, Khloe had been ‘nervous,’ especially because of the ‘pressure’ of Kim having a biological age of just 34.

‘My heart is racing,’ Khloe had said: ‘like literally, like I feel my pulse beating out of my neck, I’m like, what the f***? Like why am I this freaked out? I don’t know why. I don’t know what this like what this is going to do for me, but if I find out I’m like eight-hundred-and-twelve I’m just gonna cry, like I can’t do this.’

However, after her results came, she said: ‘I hated this test in the beginning. This is the best test I’ve ever taken in my f***ing life. If it’s not broke, don’t fix it.’

She joked: ‘The kids menu? Coming right up. Pizza? Like why? No I’m not going to change. And let me tell you. This is not even my prime. I’ve been in way better shape than this. I haven’t slept, I’m stressed the f*** out!’

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She felt especially jubilant because her elder sister Kim Kardashian, 43, also took the examination and had a biological age of 34

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‘Kim is livid, by the way, like I know she’s p***ed,’ said Khloe in a confessional

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‘For sure I’m p***ed,’ Kim admitted during her own confessional after hearing Khloe’s news: ‘I always want to be the highest achiever’

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Khloe noted how pleased she was with her result in view of the fact that she was regarded as the chubby sister when the family first shot to superstardom

Kim and Khloe’s mother Kris Jenner also took the examination and discovered that she was biologically six years younger than her chronological age of 68.

Scott Disick, who used to be engaged to Kim and Khloe’s sister Kourtney and has three children with her, underwent the test as well.

‘I’ll tell you, your biologic is the same as your calendar age,’ the doctor informed Scott, explaining: ‘Usually what that means is, probably in your past, you probably not focused on health as much.’

Scott gamely acknowledged that he used to indulge in certain vices, as Kim and Khloe chimed in with the details, bringing up ‘drugs,’ ‘alcohol’ and ‘strippers.’