Elevated spinal fluid protein levels can either be the result of diffusion of plasma protein across an altered blood-brain barrier or intrathecal synthesis. An optimized testing protocol is presented in this article that helps to discriminate both cases and provides quantitative measurements of intrathecally synthesized proteins.
Gilli, F., Welsh, N. C., Linzey, M. R., Royce, D. B., DiSano, K. D., Pachner, A. R. Quantitative Measurement of Intrathecally Synthesized Proteins in Mice. J. Vis. Exp. (153), e60495, doi:10.3791/60495 (2019).