The certificate was given to Tru one month ahead of schedule as her health is beginning to deteriorate.
Tru was born on May 4, 1893 in Ho Chi Minh City. She is the mother of eight daughters and three sons, her first-born child died at the age of 91 and the youngest child aged 82 is currently living with her.
Earlier on April 20, the Hong Kong-based World Record Association officially recognised Nguyen Thi Tru as the oldest woman in the world. Tru was also recorded as the oldest woman in Vietnam and Asia by Vietkings and the Asia Record Association in August 2014.
Vietkings has also sent Tru's file to the Guinness World Records and India-based World Records Union to seek their recognition.