Tulsa, OK
A 51-year-old female asked:

How low does b12 level have to be before it can cause damage?my level is 194 pg/ml.i've recently been having "electrical" surges in head while trying to fall asleep.for 2 yrs had twitches & "crawling" in both calves when sitting or resting. related??

2 doctor answers2 doctors weighed in
Dr. Gurmukh Singh
Pathology 51 years experience
All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Talk to the doctor who ordered the tests. Having said that, your B12 level is lower than desired. Try sublingual preparations but you may need injectable B12. Wish you good health!
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Dr. Bennett Machanic
Neurology 47 years experience
Dr Singh is indeed correct, as it is important to boost your B12 levels. The most efficient is via monthly injections, and best to maintain levels above 400 pg/ml. Would wonder if your sensations are actually manifestations of low B12, and would heed these early warning signs.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Jun 17, 2023


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