Hi i am after some advice please. I had 6 b12 loading doses in October 2016. I was deficient in b12 and folate after bloods tests. My GP requested PA serology but the labs made a mistake and did my b12 level it came back 1500 in November. We did expect that. It took 4 attempts and a complaint to the bloods dept before they finally did the test which came back negative. My gp said i would only get 3 monthly jabs if i have PA. This week she checked my b12 levels again and they have dropped to 375. Is it normal for the level to drop so quick. I have booked a double appt with her because all the symptoms are coming back. I feel i should be on 3 monthly jabs and want to fight my corner with this. Any advice would be appreciated.