For example in Italy the oficial hips score you can make whit dog 12 months old.
In Germany 15 months old.
My vet is also a oficial hips score vet, but I prefer to send to other after the xray, because after noody can say, that my vet make for me "better" result, but always she can say me, which score I can wait and in 99% she has true..
I dont know how is in Spain, but for me the finaly result is in theorie not so important! If the dog is finaly A or B, or B or C... For me is important see self the xray and take the discusion whit my vet aout the xray, if is laxit or if is not enough round, or if is realy nice...
Im used very oeftly the dog before oficial hips result, Im wait sometimes very long time for to got oficial result back and important is, that Im see before the xray and my vet told me her oponion, which Im absolut respect! The finaly "papers" whit the result is just for the new clients.. For me personaly is more important what Im realy see.