Sorry to hear about your suffering. What I understand is that your confused regarding whether the tingling is due to low vitamins or not, is that true?
It is not only low levels, but also for how long the levels have been low. So if the vitamin levels are low, only marginally, but have been around for a while then surely symptoms can arise. Tingling sensations are attributable to low vitamin b12 and folic acid levels. Now, it is good that you are being worked up for the reason (by having the antibody test) and also that the replacement has begun. It is also wise to have consultation with the neurologist.
Vitamin D levels being low are rarely accountable for the tingling
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