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. 2022 Nov 23;94(1):1–9. doi: 10.1136/jnnp-2022-328799

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© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Ig levels change from baseline over time. Normal ranges (g/L): IgG: 7–16; IgA: 0.7–4.0; IgM: 0.4–2.3. BID, twice daily; CFB, change from baseline; Ig, immunoglobulin; MS, multiple sclerosis; QD, once daily; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus.