Abstract: A method for diagnosing COVID-19 infection of a person. The method includes acquiring a sputum sample of the person, measuring a level of reactive oxygen species (ROS) in the sputum sample, and detecting a COVID-19 infection status of the person based on the measured level of ROS. Measuring the level of ROS in the sputum sample includes recording a cyclic voltammetry (CV) pattern from the sputum sample and measuring a current peak of the recorded CV pattern. Detecting the COVID-19 infection status of the person based on the measured level of ROS includes detecting the person is infected with COVID-19 if the measured current peak is in a first range of current peaks and detecting the person is not infected with COVID-19 if the measured current peak is in a second range of current peaks.

Abstract: A method for detecting cancerous status of a suspected lymph node (LN) to be cancerous. The method includes measuring fatty acid oxidation (FAO) in the suspected LN by measuring a charge transfer resistance (RCT) associated with the suspected LN, and detecting, utilizing one or more processors, a cancerous status of the suspected LN. Detecting the cancerous status of the suspected LN includes detecting the suspected LN is cancer involved if the measured RCT is less than a reference RCT value, or detecting the suspected LN is healthy if the measured RCT is more than the reference RCT value.

Abstract: A method for diagnosing COVID-19 infection of a person. The method includes acquiring a sputum sample of the person, measuring a level of reactive oxygen species (ROS) in the sputum sample, and detecting a COVID-19 infection status of the person based on the measured level of ROS. Measuring the level of ROS in the sputum sample includes recording a cyclic voltammetry (CV) pattern from the sputum sample and measuring a current peak of the recorded CV pattern. Detecting the COVID-19 infection status of the person based on the measured level of ROS includes detecting the person is infected with COVID-19 if the measured current peak is in a first range of current peaks and detecting the person is not infected with COVID-19 if the measured current peak is in a second range of current peaks.

Abstract: A system for diagnosing COVID-19 infection. The system includes an electrochemical probe with three needle-shaped electrodes configured to be inserted into a sputum sample, an electrochemical stimulator-analyzer electrically connected to the electrochemical probe, a memory having processor-readable instructions stored therein, and a processor configured to access the memory and execute the processor-readable instructions to perform a method.

Abstract: A system for diagnosing COVID-19 infection. The system includes an electrochemical probe with three needle-shaped electrodes configured to be inserted into a sputum sample, an electrochemical stimulator-analyzer electrically connected to the electrochemical probe, a memory having processor-readable instructions stored therein, and a processor configured to access the memory and execute the processor-readable instructions to perform a method.

Abstract: A method for tumor suppression. The method includes inserting an active part of a wire into a cancerous tumor, electrostatically stimulating cancer cells of the cancerous tumor by injecting positive electrostatic charges to the cancer cells, and reducing size of the cancerous tumor responsive to the electrostatically stimulating cancer cells of the cancerous tumor. The active part of the wire is located at a first end of the wire. Injecting the positive electrostatic charges to the cancer cells includes accumulating the positive electrostatic charges on the inserted active part of the wire, and generating a positive electrostatic charge flow through the cancerous tumor responsive to accumulating the positive electrostatic charges on the inserted active part of the wire.

Abstract: A method for diagnosing COVID-19 infection of a person. The method includes acquiring a sputum sample of a person, measuring a level of ROS in the sputum sample, and detecting a COVID-19 infection status of the person based on the measured level of ROS. Measuring the level of ROS in the sputum sample includes recording a cyclic voltammetry (CV) pattern from the sputum sample and measuring a current peak of the recorded CV pattern. Detecting the COVID-19 infection status of the person includes detecting COVID-19 infection of the person responsive to the measured current peak being in a first range of more than 230 ?A and detecting COVID-19 non-infection of the person responsive to the measured current peak being in a second range of less than 190 ?A.

Abstract: A method for diagnosing COVID-19 infection of a person. The method includes acquiring a sputum sample of a person, measuring a level of ROS in the sputum sample, and detecting a COVID-19 infection status of the person based on the measured level of ROS. Measuring the level of ROS in the sputum sample includes recording a cyclic voltammetry (CV) pattern from the sputum sample and measuring a current peak of the recorded CV pattern. Detecting the COVID-19 infection status of the person includes detecting COVID-19 infection of the person responsive to the measured current peak being in a first range of more than 230 ?A and detecting COVID-19 non-infection of the person responsive to the measured current peak being in a second range of less than 190 ?A.