The Games have already been pushed back from this summer to 2021 due to the COVID-19 outbreak.
The Pole said physical testing might be virtually at a standstill but WADA and national anti-doping agencies possessed other weapons they can deploy in the fight against doping.
The colourful Zhang won silver at the Beijing 2015 World Championships and also competed at the London 2012 and Rio 2016 Olympics.
Kipsang, who claimed the world record during the 2013 Berlin marathon, is currently under provisional suspension from the World Integrity Anti-Doping Unit.
The 2020 Games was postponed due to the global outbreak of COVID-19 and will now take place from July 23 to August 8, 2021.
The AIU, the independent anti-doping watchdog for track and field set up in 2017, operates testing procedures in more than 100 countries.
The world high jump champion says a concerted effort is needed to overcome the threat of covid19.
The announcement came immediately after Olympics organisers said the 2020 Tokyo Games will now take place on July 23-August 8, 2021.
US coach Salazar was banned for four years in October after being found guilty of doping violations following an investigation by the USADA.
A stopwatch provided by the couple shows they covered the distance in five hours, nine minutes and 39 seconds.
Andrey Silnov, the 2008 Olympic high jump champion, and 2012 Olympic 400m hurdle champion Natalia Antyukh will have to face a decision from the CAS.
Events in Stockholm on May 24, Naples on May 28 (moved from Rome in January) and Rabat on May 31 has been pushed back.
The Doha Diamond League meeting was postponed earlier.
Any decision on dates must wait, however, for the International Olympic Committee to state exactly when the Tokyo Games will take place.
European Athletics also announced its under-18 championships, originally scheduled for July in Italy, will not take place this year.