The delegation said it could not explain how meldonium ended up in Alexander Krushelnitsky's body.
Ziga Jeglic has tested positive for fenoterol, an asthma drug which aids breathing.
Kei Saito failed an out-of-competition doping test the day he arrived in Pyeongchang.
The doping raids involved team Altopack Eppela and took place around Tuscany.
The decision by the Court of Arbitration for Sport will come on Friday, just hours before the Olympics open.
The International Olympic Committee declined a request for 13 Russian athletes, recently cleared of doping, to attend the 2018 Pyeongchang Winter Olympics.
The International Olympic Committee (IOC) says the upcoming games will offer the most comprehensive and independent anti-doping measures in Olympic history.
The Russian president says the ruling proves the "vast majority of our athletes are clean."
Elena Nikitina will also get the bronze medal she won at the 2014 Sochi Games returned to her.
Twenty-eight Russian athletes have had their Olympic doping bans overturned by sport's highest ruling body.
Some of the athletes will be invited to compete in five sports under a neutral flag.
The IAAF is investigating allegations that the world champion's coach Dennis Mitchell and an agent offered to supply performance-enhancing drugs.
Russian Deputy Prime Minister Vitaly Mutko who was heavily implicated in the Sochi doping scandal said that being given a lifetime Olympic ban doesn't have any impact on his current work with FIFA
The International Olympic Committee is set to decide whether to ban Russia from next year's Winter Olympics over alleged institutionalised doping
Journals kept by the former chief of Russia's anti-doping lab are being used as evidence in a case that will determine the fate of the country's Winter Olympics team.
The world's athletics governing body has maintained Russia's ban on competing in international track and field events as top Russian officials continue to deny operating a doping system.
WADA is maintaining Russia's suspension from most international sports, all but ruling out participation in the 2018 Winter Olympics, and threatening a Russian boycott of the next Summer games.
The Jamaican sprinter Nesta Carter who was retroactively found guilty of doping at the 2008 Beijing Olympics has attended his appeal hearing
Four Russian cross country skiiers failed doping tests leading the IOC to slap them with lifetime Olympic bans.
Top athletes launch #MyMoment campaign