Jain, who is the AAP MLA from Shakurbasti, has now fully recovered and will start his duties from today and has also expressed his desire to donate plasma previously.
The AAP leader, who had tested negative on Tuesday, was tested again on Wednesday and the results have confirmed that he has contracted the virus.
The 55-year-old minister was brought to the Rajiv Gandhi Super Speciality Hospital (RGSSH) in the early hours of Tuesday
The Union Health Ministry on Friday listed 130 districts across the country as red zones, ahead of the extension of the second phase of the nationwide lockdown from May 4.
The state health minister called for opening COVID-19 testing laboratories in four Delhi government hospitals