The commenter indicated that the cardiac MRI procedures are more resource intensive because of stress protocols, continuous patient monitoring, specialized staff to care for patients undergoing these procedures, longer procedure room time, and post-stress observation time and many of the other procedures that are in these APCs are lower-acuity, non-cardiac tests
Oral B12 looks cheap, but if your body absorbs very little of each pill because of low stomach acid or a gut condition, much of that spending does not translate into results, and you keep buying bottle after bottle
They are included to illustrate general laboratory relevance and do not imply suitability for any personal, clinical, athletic, cosmetic, or veterinary purpose
In some rare cases, very high levels of B12 in the blood can be associated with minor side effects like mild acne, dizziness, or a temporary rash