Coronation Street
The family had not been able to see their elderly relative for nine months.
ITV said the individual is now self-isolating at home after returning the result last week.
Todd was previously played by Bruno Langley, whose contract was terminated after he was accused of sexual assault.
The soap had a prop in the Underworld factory set that came in handy for filming scenes between Gary Windass and Sarah Platt.
The Little Mix singer and RuPaul's Drag Race UK star showed off their impersonations in the latest episode of Jade's MTV series.
The former Coronation Street star has said the shoots were not "something that I necessarily really wanted to do".
Line Of Duty, Coronation Street and Love Island are also in the running.
However, the Steve McDonald actor has maintained he empathises "with a person who puts kids first".
The former Coronation Street star lives on a house boat on London's canals.
The former soap actor played Des Barnes for eight years in the ITV series.
About Coronation Street
News, spoilers, cast updates, pictures and video from ITV's biggest soap 'Coronation Street' straight from Weatherfield and the Rovers Return.