Question: How to deal with the fact that blood tests for nutritional status aren’t adapted to children?

There aren't childhood-based ranges that are data-driven. So what if the ranges need to be a little bit different in children?

The approach in the Cheat Sheet is not to rely exclusively on ranges, it's also to look at the diet and lifestyle analysis and to look at signs and symptoms. 

So what you do is you piece together: does the diet and lifestyle analysis, the blood lab, and the signs and symptoms all say deficiency X, too much Y. Then that's very good information and what you do is you intervene on the basis of what seems probable and you monitor the outcome.

This Q&A can also be found as part of a much longer episode, here: https://chrismasterjohnphd.com/podcast/2019/02/24/ask-anything-nutrition-feb-17-2019/

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Access the show notes, transcript, and comments here.