VAR was used at the 2018 World Cup, is in operation in Italy and Germany's top divisions, and has been utilised in some FA Cup and Carabao Cup games.
A shortened window went ahead this year after a number of Premier League managers and club officials complained about the negative impact of transfer uncertainty and speculation on their players.
The referees association PGMOL trialled the VAR system earlier this season to test that the technology could work at their data centre for multiple matches at the same time.
A statement from the Premier League said its testing programme would continue for the rest of the season, "with a continued emphasis on those Saturday afternoons which have several matches being played concurrently".
VAR has been met with mixed reviews but a largely smooth implementation at the 2018 FIFA World Cup in Russian Federation helped to resolve doubts over its effectiveness.
VAR is used to check goals, penalties - both awarded and not, direct red cards and cases of mistaken identity when a player is wrongly booked or sent off.
It said it will establish a "clear protocol" for the way VAR decisions are communicated to fans in stadiums following previous criticism from supporters. I know a lot of people are against it but we've got to embrace it now and move forward.
Premier League clubs have voted in favour of introducing Video Assistant Referees (VAR) to the competition from the 2019-20 season onwards. Those incidents led to 20 reviews, with 17 decisions changed as a result.
"I think it is a good thing".