First, I would like to say I did not intend to offend or upset anyone. I have been a registered veterinary technician for 12 years and have done a great deal of work on and study into the medicine of reptiles so, I was just trying to offer some advice so you could get the best possible care for your tortoise. With that said, in regards to your vet " giving a little gas" to your tortoise it is VERY impractical to try to anesthetize a tortoise (or most reptiles for that matter) using isofluorane (which as Linda stated is along with Sevofluorane the safest gas) anesthetic alone, because tortioses can hold their breath for a very long time and breathe very slowly. Isofluorane is an inhalant anesthetic so it could take HOURS for your tortoise to get even a little sleepy. In order to take blood from a foreleg on a tortoise you would most likely have to do a cut down which is where you cut through the extremely thick skin to find the vessel. This seems silly when there is a perfectly good jugular vein that is easily accessible on a good sized tortiose such as yours. Hookworms are intestinal parasites and can cause abnormalities in the bloodwork but unless your tortoise has such a HUGE parasite load that it has started to cause intestinal bleeding, anemia is not one of them. I think that a blood panel is always a good idea in pets because it can uncover underlying disease that is just starting or if everything is normal it can give you a baseline for when your pet is sick.
Now I mean absolutely no offense again, but just from what you said it really does not sound like your vet has experience treating tortoises. She may own them but I do not think she has treated them. Now, I do not know this vet and am going only on what you have saif so I could be completely wrong, but if it were my tortoise I would look into another reptile vet. You can go to www.arav.org and see if there is a reptile vet near you. Even if you have to drive a couple of hours it would be worthwhile. This is just my opinion so you can take it or leave it. I just hang around the forum because I love to talk and learn about tortoises and I have two California desert tortoises that I adore
. (As far as cost for xrays, in CA it would cost about $100 for the xrays alone)
-----
Stacey