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. 2020 Aug 31;12(9):2653. doi: 10.3390/nu12092653

Table 3.

Normal and pathologic blood values of micronutrients involved in the development of nutritional optic neuropathies.

Normal Pathologic
Vitamin B12 200–900 pmol/L <150 pmol/L
Folate 3–20 ng/mL <3 ng/mL
Thiamine 75–195 nmol/L <75 nmol/L
Copper 70–125 μg/dL <70 μg/dL