New vitamin B12 test November 16, 2019 14 By Ewald Bahringer CategoryArticles BlogTagsbreast milk breastfeeding children elderly holotranscobalamin infants Mental Health methylmalonic acid nerve health plant-based diets Pregnancy prenatal vitamins supplements vegans vegetarians vitamin B12 women’s health 14 Comments PlantOnlyMan says: August 9, 2013 at 8:36 am 1:53 This study appears to be flawed. I'll direct you to Dr. Ralph Carmel's rebuttal "Holotranscobalamin: Not Ready For Prime Time." Valente et al used erythrocyte B12 count, which is a dubious indicator of B12 status. There are additional problems with holoTC not discussed in Carmel's paper. These are discussed in my blog article "Vitamin B12: The Achilles' Heel of Vegan Diets." HoloTC does a better job of identifying elevated MMA than serum B12 though. Reply richmanpoman1 says: November 1, 2013 at 6:15 pm Listening to this guy, he sounds like a typical Jewish know it all. Reply natureasintended says: January 24, 2014 at 10:59 am Tests can be skewed once supplementation has begun, including with algae supplements which may contain B12 analogues. Dr.Greger, many are squeamish at the thought of injections. Perhaps it's best to avoid the graphics. 🙂 Reply forisma says: March 21, 2014 at 6:43 pm love you, dr. Greger!! thank you! Reply thebest18181818 says: October 2, 2015 at 11:56 am can someone tell me where, in which country or pharmacy i can buy injectable methylcobalamin? Reply Cassian YHVH says: May 22, 2016 at 12:33 am You didn't mention whether those given oral B12 had sufficient intrinsic factor. Doesn't oral not work for these folks who may have gastric surgery or others ?? Reply Maxim C. says: May 28, 2016 at 8:35 am Didn't take into account intrinsic factor deficient individuals though. What we do about them? Reply Maxim C. says: June 6, 2016 at 7:56 am It's UMMA (urinary MMA), actually. MMA (from blood) is less accurate, from what I could gather. Reply Patrick van meter says: September 15, 2016 at 12:32 pm So take a supplement and don't worry about it. Its not as if you are going to overdose on B12. That is what I did and end of problem. Reply Miguel Ángel Siller Uvalle says: March 12, 2017 at 12:39 am should i finish my b 12 supplement (cyanocobalamin) or stop taking it and swap immediately to (methylcobalamin)? Reply Yohana Genova says: November 28, 2017 at 1:24 am hey doc ! what do you think about micronutrient testing? Reply Ellen says: February 19, 2018 at 4:15 pm I think literally everyone should be tested these days BECAUSE of different diets, MDs recommending less meat and dairy (because in the diet it is only found in meat, dairy and eggs), people being put on PPIs or metformin or drugs that block b12 absorption, and many other reasons. It should be a basic blood work screening these days, not waiting for neurological disorders to develop, which by that time you feel terrible. Doctors are failing people by not routinely screening for this. the levels are also way out of whack. Studies show that under 500 you should be taking proper amounts of B12 supplements OR injections (Japanese studies and other experts agree)… if you have a doctor who will do injections but most don't take it seriously. It can be corrected and levels brought up to normal, and many many people find all their symptoms go away. We need to make it a routine blood work on all people to at least screen for it. Reply nargis fatima says: March 12, 2018 at 4:55 pm Please give me answer my B12 level 245 hy deatial give me treatment Reply DoubleArmDMT OM says: June 2, 2018 at 4:25 am Vitamina don't exist. Reply Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Save my name, email, and website in this browser for the next time I comment.