I have used several (5-6) vets in the last fifteen years and none of them has had that policy. My last dog had surgical procedures at two different vets and neither required it prior to surgery. I am also personally very pro laparoscopic spay (my puppy will be done this way). I spoke with both my vet and the vet at the specialty hospital who will do the laparoscopic spay and the recovery time and post operative pain is significantly reduced when compared to the traditional spay. I know the cost is high- but I think the benefits make laparoscopic well worth it isn't a financial hardship.