For many people, Cigna Medigap Plan G will be the benchmark: strong coverage, fewer surprise bills, and premiums that can be competitive in many states
B12 shots are typically administered in the upper outer quadrant of the gluteal muscle (the gluteus medius)
Zager RA
However, one CBER-issued warning letter, O3UV, LLC (July 7, 2025), was for a CBER-regulated device, which we have excluded for the purposes of the analyses in this article
Image z-stacks were collected with a step-size of 1 m and rendered as three-dimensional rotational animations using Imaris 8.1.2 software (Supplementary videos 1 and 2)
Without that baseline, a later shift in numbers is hard to attribute to anything in particular