[Radioimmunoassay of serum myelin basic protein].

Using purified human brain myelin basic protein (MBP) to raise antiserum in rabbits and to prepare 125I-labelled MBP (chloramine-T method), We have established a high specific, precise and sensitive double-antibody radioimmunoassay for the measurement of human serum MBP. The sensitivity was 0.5 ng/ml. In the present study, the serum samples of thirty patients with various neurological diseases were detected. An important clinical implication is that serum MBP level should serve as an index for the damage degree of central neurological diseases.