The conversation often starts like this, “What’s my vitamin D level, Doc?” or “I’d like to check my vitamin D level?” A big part of my job is interpreting lab results for patients and almost irrespective of the condition, the journey usually begins at the interpretation of the complete blood count or CBC for short, and typically culminates at the vitamin D test. Less by design, and more by default -it’s just how labs are typically reported. Working through this interpretatio