This engaging video describes the science behind vitamin D testing using simple, funny, straightforward CG animation. First, the younger, older, and active forms of vitamin D are introduced. Then, vitamin D2 and D3, which give the most accurate measure of vitamin D, take the spotlight.

Now that we’ve met vitamin D, we take a look at the tests. Immunoassays bound across the screen indiscriminately missing D2, but pick up other metabolites to deliver inaccurate results that may leave patients without the treatment they need.

Enter the QuestAssureD™LC/MS/MS test offered by Quest Diagnostics. By separating molecules, ionizing them, and only measuring D2 and D3, this high-tech test gives an accurate result every time.