A parietal cell antibody test may be used along with or following an intrinsic factor antibody test to help determine the cause of a vitamin B12 deficiency and to help confirm a diagnosis of pernicious anemia.
1 Place leg of lamb on a rack in a roasting pan. 2  Preheat oven to 325 degrees and bake leg of lamb uncovered for 30 minutes per pound or until internal temperature reaches 120 to 130 degrees at the thickest point. Preheat oven to 325 degrees and bake leg of lamb uncovered for 30 minutes per pound or until internal temperature reaches 120 to 130 degrees at the thickest point.
Set the bag in a dish and let the lamb marinate in the refrigerator for several hours or overnight-up to 24 hours. Step 6. Roasting the Boneless Leg of Lamb. Remove the lamb from the refrigerator at least 1 hour before cooking it.Preheat the oven to 450 F. degrees. (450Âº F = 230Âº C = gas mark 9). Snip the corner of the bag and squeeze the marinade out into the sink.esides, it just fit into my 15-inch long roasting pan, and my larger roasting pan is not as photogenic! The steps involved in making this boneless leg of lamb are: 1  Make a âspice-rubâ with garlic, thyme, rosemary, oregano and black pepper. 2  Rub it all over the roast.