CSF rhinorrhoea is diagnosed by:: (A) b2 macroglobulin, (B) b2 transferrin, (C) Thyroglobulin, (D) Transthyretin
Answer is B. (b) b2 transferrin(Ref. Cummings, 6th ed., 807)b2 transferrin on electrophoresis is pathognomonic of CSF as this protein is present only in CSF.