hi all!
I'm new here and wanted to get opinions on my test results. I originally was diagnosed with pernicious anemia after experiencing severe fatigue, shortness of breathe, weight gain, along with some other more minor symptoms. I experienced these symptoms for a year until they grew in severity to where I believed they must be a result of a medical problem, and around 6 weeks ago, I finally saw a doctor. She tested my blood levels and I was deficient in B12, vitamin D, and iron, which was odd because I was taking vitamin B supplements, as I am a vegetarian. She conducted further tests which found that I tested positive for the intrinsic factor antibody, meaning I had pernicious anemia, and needed B12 injections. However, this didn't explain the sudden weight gain of ~15-20lbs in 4-5 months with no change in diet or activity. In fact, in the last 6 months, I have really restricted my calorie intake as I noticed the weight gain, to absolutely no effect. I rarely gain/lose weight and this is extremely abnormal for my body.
I went to see a hematologist who told me my other test results indicated I probably had just gotten a false positive for the intrinsic factor antibody, and I should just continue taking vitamins without injecting B12. I had already injected a loading dose of B12 (a dose every day for seven days), and felt marginally better, but not completely. The hematologist's response was really frustrating and distressing because the likelihood of a false positive intrinsic factor antibody test is low, as fare as I understand. Because of the different opinions I continue to get, in addition to the weight gain, I wanted to see if my thyroid seemed normal, as it had been tested the first time. My family has a history of hypothyroidism, and it would also explain many of my symptoms. My original doctor and hematologist have dismissed the possibility of hypothyroidism, as it is in the "normal" range, but I really feel this could be a possibility, instead of or in addition to the pernicious anemia. Is there anything that could be indicative? Should I see an endocrinologist? I am only skeptical because the doctors so far have acted like my issues are all in my head.
My results are the following: (please ignore if not relevant, I wasn't sure what was)
-Vitamin D, 25-Hydroxy 25.50 ng/mL, range: 30.0-100.0
-Vitamin B12 7/28/2018 221.00 pg/mL, range: 232-1245
-Folate (Folic Acid), Serum, 18.10 ng/mL, range: >3.0
-Iron Bind.Cap. (TIBC) 427.00 ug/dL, range: 250-450
-UIBC 383.00 ug/dL , range: 131-425
-Iron, Serum, 44.00 ug/dL, range: 27-159
-Iron Saturation 10.00 % , range: 15-55
-RBC 4.56 x10E6/uL , range: 3.77-5.28
-Hemoglobin, 12.90 g/dL , range: 11.1-15.9
-TSH 2.52 uIU/mL, range 0.450-4.500
-Triiodothyronine,Free,Serum, 3.30 pg/mL , range: 2.0-4.4
-T4,Free(Direct)1.10 ng/dL, range: 0.82-1.77
-Intrinsic Factor Abs,Serum 13.50 AU/mL, range: 0.0-1.1
-Antiparietal Cell Antibody 17.20 , range: Units 0.0-20.0
-Gastrin,Serum,16.00 pg/mL, range: 0-115
-Methylmalonic Acid, Serum 101.00 nmol/L , range: 0-378