The 15-year-old from Shetland became the youngest ever Commonwealth Games medallist by finishing third in the SB9 100m breaststroke aged 13 in 2014.
Her broad grin in the Tollcross pool after she realised she had won a medal is one of the enduring images of the Glasgow Games.
Davies has Perthes disease which affects her hip bones and joints.
However, she had her classification revised earlier this year and was told she was no longer disabled enough to take part in para sports.
She has sought a second opinion and will now be examined in Berlin to see if the decision can be overturned.
The reclassification of her condition in April meant Davies missed the British Para-swimming trials in Glasgow, the only competition for swimmers to achieve qualification standards for this summer’s Rio Paralympics.
Erraid and her family were said to be “extremely upset and disappointed” with the decision which was taken after an assessment in the Tollcross pool where she won her Commonwealth medal.
Davies’ parents said her condition meant she could barely walk as a young child. She was first taken swimming at the age of four.