In the first four full days of the community-led project at the Guru Nanak Sikh Gurdwara on Sedgley Street, 872 people without symptoms have been tested for coronavirus - an average of 218 people per day.
It is understood that a small number of people have tested positive and are now self-isolating so they cannot inadvertently pass the virus on.
The scheme tests people who are asymptomatic and gives results in half an hour.
It is continuing until November 30 and is open from 7am to 7pm for anyone aged over 18 without symptoms.
Councillor Jasbir Jaspal, Cabinet Member for Public Health and Wellbeing, said: "The pilot is really important in not only enabling us to identify cases of Covid-19 which we wouldn't otherwise know about, but also in trying out new technologies in preparation for the roll out of mass testing across the country.
"This, combined with the various Covid-19 vaccines currently in development, is crucial if we are to end this pandemic."
The centre initially opened on Thursday afternoon following delays due to essential protective equipment not arriving on time.