She tweeted: "ALL NEGATIVE. Yay yay yay. #covidtesting"
Farah, a celebrity jewellry designer, added that said that the best feeling about testing negative was to see the "relieved" faces of her children and househelp.
"You know what was the best feeling more than testing negative for Covid? It was the relieved faces of my children and in-house staff who live with me since more than 10 years. That was priceless. Happiness is contagious," she added.
Even though she has tested negative, Farah has been advised to be in quarantine.
"Will be quarantined until 29th April 2020 even though I tested negative. Be safe. Be home, This too shall pass," she said.
Earlier, Farah had tweeted that she had reported Bollywood actress Kangana Ranaut's Rangoli Chandel's account for targeting a specific community.
She wrote: "Thank you @Twitter @TwitterIndia @jack for suspending this account. I reported this because she targeted a specific community and called for them to be shot along with liberal media and compared herself to the Nazis."
Rangoli reportedly posted what is being considered as hate tweets aimed at a community from her blue tick handle, @Rangoli_ , which prompted the suspension of account.
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