I'll second the RUN AWAY as far as sedation/anesthesia for Blood Work, Nail Trim, Fecal, etc. The ONLY things that a Vet should EVER have to sedate or put a bird under anesthesia for are #1) X-Rays or other imaging tests like an Ultrasound, CT Scan, MRI, etc. where the bird has to hold completely still for it to be successful, and #2) Surgical procedures, including even Stitches/Sutures or anything that would be painful...Drawing blood from a bird should be a very simple, quick process that requires NO sedation/anesthesia at all, and it's a very serious risk that they are putting your bird in for no reason at all, except maybe an incompetent Exotics or General Vet...I am not a Veterinarian, but rather a Medical Liaison for an Avian/Reptile Rescue with a Master's in Animal Health Science, and I worked for an Avian Influenza/Animal Diagnostics Lab at Penn State University under the supervision of multiple Veterinarians of various specialties, and as such I've done hundreds of blood-draws on Parrots, Game Birds, Poultry Birds, etc., and I've NEVER sedated a bird for a simple Blood Draw UNLESS I WAS ALSO HAVING AN X-RAY TAKEN AT THE SAME TIME, THAT'S DIFFERENT!!! If they are planning on also taking an X-Ray of George as a part of his Wellness-Exam, then yes, they will have to put him under anesthesia for the X-Ray, so typically they will do the general physical/visual exam of the bird, and THEN they will put the bird under sedation USING EITHER A VERY SHORT-ACTING SEDATION, EITHER #1) ISOFLURENE GAS, OR #2) LIQUID NASAL SEDATION (LIQUID BENZO'S THAT ARE FLUSHED INTO THE NOSTRILS USING A SYRINGE WITHOUT A NEEDLE), BOTH OF WHICH WEAR-OFF QUICKLY AND TOTALLY LEAVE THEIR BLOOD-STREAM IN A MATTER OF MINUTES AFTER THE BIRD WAKES-UP, SO THAT THERE IS NO TRACE OF EITHER IN THEIR BODIES IN A MATTER OF MINUTES AFTER THE X-RAY IS TAKEN...What they'll do is after the visual/physical exam (usually they will simply "Towel" the bird for this), they will sedate the bird with either the Isoflurene Gas or the Nasal Sedation, then they'll very quickly take the X-Ray because that is the only test that requires the bird be sedated, then they'll very quickly do the blood-draw from one of the bird's 2 Jugular Veins in it's neck, which should take only a minute or less from start to finish, and usually the bird is just waking-up after they finish the blood-draw. And then they should do anything else like a Toenail-Trim,, Wing-Clipping, Beak-Filing (with ONLY a hand-file) AFTER the bird has woken-up, they'll simply "Towel" the bird to do these things, unless the bird happens to still be under the Gas/Nasal Sedation...THEY SHOULD NOT EVER, EVER, EVER USE ANY TYPE OF "GENERAL ANESTHESIA" AT ALL TO DO AN X-RAY, ULTRASOUND, OR CT SCAN EITHER, THEY SHOULD USE ONLY THE ISOFLURENE GAS OR THE LIQUID NASAL SEDATION BECAUSE NONE OF THESE IMAGING TESTS REQUIRE A LONG SEDATION...ONLY AN MRI IMAGING TEST REQUIRES A "GENERAL ANESTHESIA BECAUSE AN MRI TYPICALLY TAKES UP TO AN HOUR OR LONGER TO COMPLETE.
****So, if this Vet is planning on doing an X-Ray as a part of George's full "Wellness Exam", then YES, THEY WILL NEED TO SEDATE HIM, BUT NOT WITH ANY TYPE OF "GENERAL" ANESTHESIA, BUT RATHER ONLY WITH EITHER #1) ISOFLURENE GAS OR #2) LIQUID NASAL SEDATION AND THAT'S IT...
****However, if this Vet is only doing a Blood-Draw to run routine, "Baseline" Blood-Work, along with a full Visual/Physical Exam, a Fecal Smear/Culture/Gram-Stain, and IS NOT ALSO DOING AN X-RAY, THEN THERE IS ABSOLUTELY NO REASON AT ALL TO RISK PUTTING GEORGE UNDER ANY TYPE OF SEDATION, AND IT'S A SIGN THAT THIS VET IS NOT AN AVIAN VET AND IS NOT COMFORTABLE AT ALL WORKING WITH PARROTS, AND YOU NEED TO CANCEL THE APPOINTMENT AND FIND ANOTHER CERTIFIED AVIAN VET OR AVIAN SPECIALIST VET!!! (A Fecal Culture that is sent-out to a Laboratory to be grown-out, along with them preparing a Fecal-Smear on a Slide and looking at it under their own Microscope right there on the spot in their own office should always be done, and should include #1) Scanning the non-Stained Slide to look to see if there is the presence of any Yeast/Fungi, Protozoa (such as Giardia), Worms, or any other Parasites, and then also scanning the Non-Stained Slide to make sure the bird has enough "Beneficial Bacteria" present throughout their GI Tract, which is extremely important to make sure that they do, because if the bird does not have enough Beneficial-Bacteria/Normal, Healthy Flora throughout their GI Tract, they will develop chronic Fungal/Yeast Infections throughout their lives, and suffer from chronic GI-Upsets, as well as eventually develop systemic Yeast/Fungal Infections, which eventually spread externally to becoming widespread, topical Yeast/Fungal Infections all over their Skin and inside of their Feather-Follicles, which is one of the most-common causes of the start of Plucking and other Feather-Destructive Behaviors in pet/captive Parrots, and then #2) Staining the Fecal Slide to check for the presence of any Harmful-Bacteria/Bacterial Infections (Gram-Stain)...This should absolutely be a part of any Avian yearly Wellness-Exam, but can be done on a fresh Fecal-Sample you bring in from either that morning of the appointment or from up to 24-hours prior if you put it in the Fridge as soon as you collect it; if you don't bring in a Fecal-Sample to the appointment with you they will have to take a Fecal-Sample by inserting a Swab into George's Vent/Cloaca very quickly and collect a very small sample, which DOES NOT REQUIRE SEDATION OBVIOUSLY, IT'S NOT PAINFUL AND ONLY REQUIRES "TOWELING" THE BIRD)
We can help you find the closest Certified Avian Vets and/or Avian Specialist Vets to you, there is a really good search-tool for this here on the forum...It sounds to me like this Vet you're planning on taking him to is either a General Vet (dog and cat Vet), or an Exotics Vet (a dog and cat Vet who is simply "willing to see" other species of pets/animals, yet in the US has no extra education/training in any particular species of animals/birds at all....**Avian Medicine (along with Reptile/Amphibian Medicine) is extremely specialized, and is NOTHING AT ALL like Mammalian Medicine. So while a General or Exotics Vet does in-fact have quite a bit of education/knowledge in dogs, cats, rodents, primates, and other mammals, this has nothing at all to do with them knowing diddly-squat about Avian or Reptile/Amphibian Medicine, nether of which are anything like Mammalian Medicine at all, not in Anatomy, Physiology, and especially not in the way they handle drugs/sedation/anesthesia...The only thing scarier than putting a bird under sedation and waiting for them to come out of it (most bird deaths from sedation/anesthesia happen while they are waking-up from it) is putting a Reptile under sedation or anesthesia and waiting for them to wake-up from it, because their metabolisms are soooooooooooooooooooo slooooooooooooooooowwwwwwwww that even the quick-acting Isofluene Gas takes hours and hours to leave their systems/blood-stream, so imagine how long it takes for General-Anesthesia to leave their systems!!! It's absolutely the most frustrating waiting-process in any Exotic Medicine. It will drive you insane...However, Reptiles and Amphibians don't typically die from sedation or anesthesia like birds do...
****You always need to ask lots and lots and lots of questions when you first make an appointment to see any new Vet you're going to take your bird/parrot to BEFORE you make the appointment and take them, and if you don't get the correct answers to any of your questions, or they ever refuse to give you a direct answer to any of your questions, then you just cannot risk taking your bird to that particular Vet, simply because of how many birds die due to uneducated, inexperienced, untrained, and simply irresponsible Exotics Vet...There are a lot of really good, experienced "Exotics" Vets who have been seeing, diagnosing, and treating birds/parrots for decades and who know their stuff...But unfortunately these Exotics Vets make up about 5% of all Exotics Vets in the US, simply because in the US you don't have to have anything but a Doctorate in Veterinary Medicine and then pass your Board-Test for whatever state you want to practice Veterinary Medicine in, and that's literally all you need in the US to call yourself an "Exotics" Vet...Well, that and the want to see as many patients as possible so you can make as much money as possible...I have the utmost-respect for all "General Vets" in the US who only see Dogs and Cats and refuse to see any other types/species of animals/pets, because they know that Dogs and Cats are the only pets/animals that they have any business seeing/treating because that's basically all you learn about with authority in any 4-year Veterinary Medical School in the US.