The Institute of National Anti-Doping Organisations (INADO) warned WADA against lifting Russia's drug ban, saying the country had not done enough to justify readmission to the sporting community.
In a strongly worded statement from the Berlin-based alliance of drug testing agencies, INADO accused the World Anti-Doping Agency of seeking to fast-track Russia's reinstatement at any cost.
"Any reasonable person would conclude that Russia has not yet fulfilled its obligations to the global sporting community," INADO said.
"WADA must make its decisions based on consistent application of principles and not simply out of expedience pandering to the will of a powerful nation.
"The sporting community is eager to see Russia return as an equal participant but not at any cost."
INADO said the meeting would address "perhaps the most crucial decision WADA has ever faced."