RT Journal Article SR Electronic T1 Abnormalities in CSF concentrations of ferritin and transferrin in restless legs syndrome JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 1698 OP 1700 DO 10.1212/WNL.54.8.1698 VO 54 IS 8 A1 Earley, C.J. A1 Connor, J.R. A1 Beard, J.L. A1 Malecki, E.A. A1 Epstein, D.K. A1 Allen, R.P. YR 2000 UL http://n.neurology.org/content/54/8/1698.abstract AB Article abstract CSF and serum were obtained from 16 patients with idiopathic restless legs syndrome (RLS) and 8 age-matched healthy control subjects. Patients with RLS had lower CSF ferritin levels (1.11 ± 0.25 ng/mL versus 3.50 ± 0.55 ng/mL; p = 0.0002) and higher CSF transferrin levels (26.4 ± 5.1 mg/L versus 6.71 ± 1.6 mg/L; p = 0.018) compared with control subjects. There was no difference in serum ferritin and transferrin levels between groups. The presence of reduced ferritin and elevated transferrin levels in CSF is indicative of low brain iron in patients with idiopathic RLS.