A team of doctors, who analysed the results of a series of tests she underwent at the Kerala Institute of Medical Sciences (KIMS) hospital, said the results did not show that she suffered from any serious illnesses.
"We cannot find that she had been suffering from any serious health problems....Like any other person these days, she had come for a complete check-up...She had been given only simple medicines," eminent cardiologist Dr G Vijayaraghavan, who headed the team of doctors, told reporters after a meeting of the medical board at KIMS.
The board met and reviewed the test results following the death of Sunanda, wife of Union Minister Shashi Tharoor.
Dr Vijayaraghavan said he could not divulge details of the check up and the results as that would involve the risk of encroaching upon the privacy of the patient.
Ms Tharoor was admitted in the hospital on January 12 and discharged on January 14. Her husband was also with her.
Doctors and other hospital staff who met her said she appeared "comfortable" during her stay in the hospital.
Her plan was to come back for a 'review' after one week with the investigation results pending.
Detailed information on her medical condition had been passed on to Ms Tharoor and her husband, a hospital release said.
A spokesman for Mr Tharoor said the cremation would take place at the Lodhi Road crematorium in Delhi.
Ms Tharoor's son, Shiv, from a previous marriage is already in Delhi.
Mr Tharoor's two sons Ishaan and Kanishk are expected to reach Delhi. The minister's sister Smitha has also left for Delhi from London.
Meanwhile, CPI(M) state leader Kodieyri Balakrishnan demanded a 'comprehensive' inquiry into the circumstances in which Ms Tharoor was found dead.
The news of her death came as a shock to people in Thiruvananthapuram, from where Mr Tharoor contested and won in his electoral debut in 2009 Lok Sabha polls.
Congress in the state is yet to react to the development as most of its leaders like Home Minister and KPCC president Ramesh Chennithala are yet to return to the state from Delhi in connection with the AICC meeting.
Police had stepped up security at Mr Tharoor's constituency office in the city as soon as news of his wife's death in a Delhi hotel spread.
The Tharoor couples got married in August 2010 and were seen together at the famous Sree Padmanabhaswamy temple during the 'Lakshadweepam' festival on January 14.