First time poster in this group. I'm a 36 y/o female with hx of fibromyalgia and Hashimotos. Last fall, I began to notice vertigo and palps as well as frequent insomnia.
In January this year, woke up with heart rate of 150 bpm in the early morning hours. Ended up in the ER because I didn't know what was going on. Was told it was sinus tachycardia - essentially, fast rate but normal rhythm. 30 day heart monitor has since confirmed episodes of sinus tachy without any arrhythmia. Still going through testing, but cardiologist thinks my continuing symptoms (elevated heart rate, palps, headaches, pins and needles in feet/legs, dizziness, muscle weakness, tremors) are tied to some type of autonomic dysfunction.
PCP did test b12 back in January - it was 200. She had me do once monthly injections for 3 months. Just retested and level is 390 pg/mL (200-900 range).
Going for follow-up visit this week and wondering if I need to continue to push for more injections and/or PA testing. I'm not sure how much to expect b12 to increase over the course of 3 injections? I also take a multivitamin that contains 15 mcg of methyl form of B12.
For reference, my b12 in January 2017 was 1000. I also had low vitamin d that has since been resolved as well. Last thyroid check was perfect, still waiting on most recent thyroid results.
Is this an acceptable increase in b12?