Urine Biomarker Ratios for Detecting Brain Electrical Stimulation

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Solution Overview

Problem

There is a lack of research on the adverse effects of transcranial direct current stimulation (tDCS) on human health when used for improving athletic performance, and existing methods lack a reliable diagnostic tool to detect brain doping, which raises concerns about safety and fairness in sports.

Innovation Solution

A biomarker system using ratios of specific neurotransmitters and metabolites in urine samples, such as EP/3-MT, His/Hcy, and others, to diagnose a history of brain electrical stimulation for improving motor ability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If transcranial direct current stimulation (tDCS) is used to improve athletic performance, then motor ability is enhanced, but reliability of fair competition deteriorates

Engineering Contradiction:

Improvemotor abilityVSAvoidfair competition

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent establishes preliminary diagnostic criteria and biomarker thresholds before competitions occur. By defining specific urine biomarker ratios (EP/3-MT, VMA/3-MT, Hcy/5-HT, etc.) that indicate prior tDCS exposure, the system enables pre-competition screening to identify athletes who have received brain stimulation, thereby maintaining competitive fairness through advance detection rather than reaction.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If brain stimulation is used to improve athletic performance, then motor ability is enhanced, but health risk increases

Engineering Contradiction:

Improvemotor abilityVSAvoidhealth risk

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements a feedback mechanism through biomarker monitoring that provides information about athletes' brain stimulation history. By measuring specific urine metabolite ratios and comparing them against established thresholds, the system generates feedback that indicates whether an athlete has received tDCS treatment, enabling health authorities to identify and investigate potential health risks associated with improper or excessive brain stimulation use.

Inventive Principle:

Principle #23Feedback

3Difficulty of detecting and measuring

If diagnostic methods for brain doping are developed, then detection capability is improved, but device complexity increases

Engineering Contradiction:

Improvedetection capabilityVSAvoiddiagnostic system complexity

Core Design Contradiction:

Difficulty of detecting and measuringVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical or invasive neural imaging diagnostic systems with a simple urine chemistry analysis approach. Instead of requiring sophisticated brain imaging equipment or invasive procedures, the invention uses standard urine metabolite measurement techniques to detect biomarkers of brain stimulation, dramatically simplifying the diagnostic system while maintaining effective detection capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20260002951A1Method for providing information for brain doping diagnosis

Publication Date: 2026.01.01 KOREA INST OF SCI & TECH

AI summary

The present disclosure relates to a biomarker for providing information on brain electrical stimulation, and a method for providing information for brain doping diagnosis (bD2) 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.