Vitamin D (D2 and D3 Split)

What it measures

Measures both forms of Vitamin D separately (D2 and D3). D3 is significantly more effective than D2, and many people supplement the wrong form or lack the co-factors, Vitamin K2 and Magnesium, needed for proper absorption.

Best for

Anyone actively supplementing Vitamin D, or those with a borderline total Vitamin D result from their Core Test who want to understand why levels are not improving.

If results need attention

Your Protocol doctor will advise on the right form, dose, and co-factors for your situation, and help you build a supplementation protocol that actually moves the needle.

Save $25 when bundled.