The NFL submitted a new proposal on testing for human growth hormone to the players union on April 24, according to an NFL.com report.

NFL.com, citing league and union sources, reports the latest proposal removed the prospect of game-day testing, but called for testing to start immediately.

Under those conditions, samples would be taken and results would be stored until a baseline standard for testing is reached by the World Anti-Doping Agency, according to the report.

A union source told NFL.com that the union would prefer to delay taking samples until a baseline is established first.

According to the report, the NFLPA passed the details of the latest proposal to player reps this week and is working on a counter proposal that may be submitted next week.

The NFL has not received feedback from the union yet on the proposal, a league source told NFL.com.