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. 2016 Aug;16(4):379–382. doi: 10.7861/clinmedicine.16-4-379

Box 1.

Recommended blood tests to rule out secondary RLS11

iron studies (specifically serum ferritin level)
full blood count (to exclude anaemia)
serum vitamin B12 and folic acid
serum glucose and HbA1C
urea and electrolytes
serum creatinine
thyroid function tests