PMC4734680_01
Correlation between (AChR) antibodies levels, 25(OH)D levels, and disease severity (according to Myasthenia Gravis Foundation of America clinical classification).
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Also, her anti-acetylcholine receptor (AChR) antibodies decreased from 7.40 nMol/L to 2.68 nMol/L (normal range: <0.50 nMol/L) (Figure 1). All the symptoms and the antibody level had a direct and linear improvement relation with serum 25(OH)D levels (Figure 1). D was reintroduced. During this episode, her antibodies increased from 2.68 nMol/L to 13.95 nMol/L, and vitamin D levels decreased from 605 ng/mL to 284 ng/mL (normal range: 30 ng/mL to 100 ng/mL) (Figure 1).