The present disclosure relates to a biomarker for providing information on brain electrical stimulation, and a method for providing information for brain doping diagnosis (bD.sup.2) using the same. According to the present disclosure, there is provided a method for determining, using a urine sample, whether a subject has received brain electrical stimulation, which may be used as a means for establishing regulations and countermeasures for abuse of brain doping of which safety has not yet been confirmed.