Question: What to do when different folate markers don’t line upYou know, if you have high figlu on the NutrEval, which is Formiminoglutamic acid, which rises when there is Tetrahydrofolate THF, unmethylated folate, to metabolize figlu, and in that case, I would be thinking about maybe you have a B12 deficiency that is leading to the trapping of folate as the methylfolate form, so that THF isn't regenerated for that reaction. So I would absolutely never use figlu as the only marker of folate. I would look at serum folate and red blood cell folate always as the first markers of folate. So in this case, I would look at your serum folate and your red blood cell folate. So before I would get folate injections, I would be looking at all those markers to see whether there's a coherent story between all of them that are agreeing that your folate status is low despite supplements, versus a divergence story between them that is telling me that one form of folate is the one that's missing rather than a total folate. If you would like to be part of the next live Ask Me Anything About Nutrition, sign up for the CMJ Masterpass, which includes access to these live Zoom sessions, a private discussion group, premium features on all my content, and hundreds of dollars of exclusive discounts. You can sign up at https://chrismasterjohnphd.com/masterpass/ and use the code QANDA to get 10% off the membership for life. From now through March, I will be working full-time on finishing my Vitamins and Minerals 101 book, while reserving a portion of my time for consulting clients. You can pre-order my book at https://chrismasterjohnphd.com/book. You can sign up for a consultation at https://chrismasterjohnphd.com/consultations. DISCLAIMER: I have a PhD in Nutritional Sciences and my expertise is in performing and evaluating nutritional research. I am not a medical doctor and nothing herein is medical advice.

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