Serum vitamin C level (mg/dL)

RRMS (n = 28)

SPMS (n = 12)

P

Range

0.30 - 0.75

0.28 - 0.60

0.959

Mean ± SD

0.46 ± 0.11

0.47 ± 0.18

Median

0.46

0.48