Invention describes a method and a device for testing toxicity of a test sample. The method comprises at least the steps of: providing an aliquot or a volume of light producing test reagent liquid in a reagent vial, moistening a control swab with the light producing test reagent liquid, moistening a test swab with the test sample, moistening the test swab with the light producing test reagent liquid, reading luminescence of the control swab in a luminometer and thereby obtaining a luminescence value of a control sample, reading luminescence of the test swab in the luminometer and obtaining a luminescence value of the test sample, calculating the toxicity of the test sample by comparing the luminescence value of the control sample to the luminescence value of the test sample. According to the invention the moistenings of the control swab and the test swab with the light producing test reagent liquid are done with the same aliquot of light producing test reagent liquid in the same reagent vial.”

The invention relates to a flexible specimen collection container for use with a toilet frame comprising: a sealable opening for receiving stool directly from a donor; a first compartment for receiving and holding stool, said first compartment coupled to said opening; a second compartment for collecting and holding fluid received from the donor through the sealable opening, the second compartment being in fluid communication with said first compartment and configured to substantially separate the fluid from the stool. At least one port may be connected to said first compartment and being configured to pass at least a portion of the stool.

Technology is disclosed for a cat litter that can be used to diagnose feline medical conditions. A cat litter contains an additive, e.g., a chemical agent, such as a natural and/or synthetic agent, that changes in color when it comes in contact with cat urine or feces. Based on the color it can be determined whether the cat has a medical condition, such as particular illness. For example, if the litter turns yellow when it comes in contact with the urine, it can indicate that the cat is healthy. If the litter turns to a color other than yellow, e.g., green, it can indicate that the cat has some illness. The cat then be taken to a veterinary doctor for further diagnosis. The chemical agent aids in detection and diagnosis through interaction of materials that change colors to indicate reactions with specific chemicals, cells, molecules, DNA and/or materials. The technology can be implemented for medical diagnosis and detection—for humans and/or animals.

An unmanned vehicle operated autonomously or by remotely piloting incorporates an onboard camera which is affixed with clear tape coated with a chemical colorimetric sensor dye sensitive to chemical warfare agents. Chemical warfare agents are detected by visual review or autonomous measurement of sensor color changes while the unmanned vehicle travels through a region suspected of having chemical warfare agents present. In various implementations, the sensor output color changes may be visually monitored by a vehicle operator viewing the camera image from a remote location. In various embodiments, the detection of chemical warfare agents may be confirmed by processing the coated tape with a calibrated opto-electronic reader.

An embodiment includes a sample receiving region, a first diagnostic element that includes one or more colorimetric analysis regions, and a second diagnostic element that includes one or more lateral flow assay analysis regions. The embodiment also includes a first flow path that allows a portion of a liquid deposited at the sample receiving region to flow to the first diagnostic element. The embodiment also includes a second flow path that allows a portion of the liquid deposited at the sample receiving region to flow to the second diagnostic element.

Methods and systems are provided for verifying hygienic hand cleaning including a wash basin, having a contaminant sensor positioned in proximity to a drain of the wash basin, to measure a level of contamination of rinse fluid leaving the wash basin; and a processor and associated memory having instructions that when executed by the processor implement: receiving a signal from the contaminant sensor indicative of the level of contamination; and responsively, determining the level of contamination and comparing the level of contamination with a contamination threshold to determine a hand washing status.

Personal diagnostic devices including diagnostic patches (bio-patches) and interactive medical bracelets (bio-bracelets) are provided with a skin/patch interface, at least one analysis layer, a signal processing layer, and a user output interface. Embodiments of the interactive diagnostic devices may include micro-fluidic circuits with reaction chambers, analysis chambers, mixing cambers, and various pre-disposed chemistries or reagents for performing a wide verity of tests by transdermal transport of blood or perspiration. Sample collection chambers for the fluidic circuit may include minimally invasive tubules that penetrate the skin surface to acquire blood samples from capillaries near the epidermis. Alternate implementations of the personal diagnostic device may be equipped with logic processing, input/output devices, acoustic microphones, cryogenic circuits, embedded processors, electrical control circuitry, and battery current sources or photovoltaic sources of electrical power.

The disclosed technology relates to chemical entities for the detection of wounds, e.g., chronic wounds or infected wounds, including compositions, substrates, kits, dressing materials, and articles, and systems containing such compounds. The disclosed technology further relates to methods of using these compositions, kits and systems in diagnostic assays, and in the diagnosis and/or detection of chronic or infected wounds based on enzymatic action on specific moieties and/or reaction sites. The disclosed technology additionally relates to detection of pathogenic, e.g., bacterial and/or viral substances, such as enzymes and substrates, at the wound situs. Additional disclosure relates to methods of characterizing wounds based on expression of a plurality of markers and using such information to treat, manage, and follow-up patients suffering from chronic or infected wounds.

Described systems and methods allow the detection and quantitative estimation of changes in the properties of a liquid sample comprising living biological cells, the changes caused by exposure to a target analyte such as a toxin, drug, pesticide, etc. A variable stimulus such as an oscillating magnetic field is applied to the sample, inducing variations in a position or shape of a constituent of the sample. Such variations produce measurable variations in electric and/or optical properties of a sensor, variations which allow a precise quantification of changes due to exposure to the target analyte.

A food tester including at least one of, a test strip, a food wrapper, a food box or carton, and a cooking or eating utensil. A food grade testing composition disposed in at least one of said test strip, food wrapper, food box or carton, and cooking or eating utensil. Wherein said food tester is configured to change colors, including but not limited to, a green color if at least one of plant cell walls, plastids, and large central vacuoles is present and wherein said food tester is configured to change colors, including but not limited to, green color to a red color if at least one of said plant cell walls, plastids, and large central vacuole is absent.