My husband suffers from psoriasis, has had Hodgekins lymphoma in past with stem cell transplant and chemo, has underactive thyroid, sarcoidosis of the lungs, heart attack and by pass surgery. Now he is fatigued, depressed, forgetful and his blood results show B12 at 253 (180-1000) Folate at 4.7 (>4) serrum ferritin 66 (25-300) MCV 100.2 (80-100) Red cell count 4.49 (4.5 - 6.5) MCH 32.7 (27-32) and some of his white cell counts are low. Doctor will not test for PA until B12 falls below 150. I started him on oral B12 and folate - but should I do this? I was misdiagnosed for years with PA and know the consequences. I worry given his history of auto immune disease that he will deteriorate if I do not get this sorted. I am considering a private test with Blue Horizon but need to know should I stop the oral supplements in case they skew the antibody test.