In the present study, we propose immuno-wall lab-on-a-chip protein analysis devices for ultrarapid detection of R132H mutant isocitrate dehydrogenase 1 (IDH1) that we identified as a specifically and commonly expressed gene in diffusely infiltrative gliomas1. In 9 min immunoassay, we successfully carried out specific detection of R132H mutant IDH1 in a lysate of glioma tissue, which is much faster than intraoperative pathological diagnosis. Moreover, clinical samples from 10 patients with gliomas were analyzed by using the immuno-wall devices. These results were consistent with those of PCR-based genetic mutation detection method. Our devices realize point-of-care tumor testing, resulting in the high precision surgery of gliomas.