Liverpool, who host Chelsea on Sunday, lead Manchester City by two points with five games remaining although the defending champions have a match in hand.
The IAAF is seeking to force so-called ‘hyperandrogenic’ athletes or those with DSD to seek treatment to lower their testosterone levels if they wish to continue competing as women.
A video circulated on social media ahead of Chelsea's Europa League match at Slavia Prague this week showed a group of six supporters chanting "Salah is a bomber" repeatedly.