A device and a method of using the device for determining hematocrit in a whole blood sample. The device includes a first portion having an introducer, at least one fluid channel, a fluid actuator, and an analysis sensor and conductivity sensor disposed within the fluid channel. The second portion includes at least one well containing at least one material. The first portion and second portion are movable with respect to each other. The introducer is configured to transfer at least a portion of the material from the well in portion two into the fluid channel of portion one. The method includes measuring the resistance over substantially the entire portion of a whole blood sample and calculating an average hematocrit level of the whole blood sample based on the measured resistance.

An optical measurement device 1 includes: a measurement unit; and a determination unit, wherein the determination unit calculates a difference value between the initial measurement value and the latter measurement value when the measurement value exceeds the first threshold value after the sample is held by the lateral flow test strip, determines that the sample is positive when the difference value exceeds a second threshold value set in advance, and determines that the sample is negative when the difference value is the second threshold value or less.

A method of setting a handover position of a gripping device at a laboratory automation system is presented. A position of a position determining device held by the gripping device is detected using position sensors in order to determine the handover position. A laboratory automation system configured to perform such a method is also presented.

An assay device is disclosed comprising a housing and a test portion, electronic circuitry and an optical assembly each a least partially located in the housing. The test portion comprises one or more test zones adapted to receive an analyte and a fluorescent label associated with the analyte, the fluorescent label being excitable by excitation light and adapted to emit emission light upon excitation by excitation light. The electronic circuitry comprises one or more light sources and one or more light detectors. The optical assembly comprises one or more excitation light guides adapted to guide excitation light from the one or more light sources to the one or more test zones, and/or one or more emission light guides adapted to guide emission light from the one or more test zone to the one or more light detectors.

The problem of detecting whether a urine sample is true human urine or a counterfeit urine product is solved by the use of reagent systems that detect two markers normally present in human urine. The markers acid phosphatase and alkaline phosphatase catalyze the substrates thymolphthalein monophosphate and p-nitrophenol phosphate, respectively. These substrates are formulated as spot tests on a dip stick or as reagents for use in automated chemical analyzers. The presence of the markers can be qualitatively detected by color-changes in the sample, formed by the pH-specific chromogens that result from catalysis of the substrates with the markers. The control reagent can further indicate whether a counterfeit urine product contains one or both of the chromogens.

The invention relates to a discoid sample holder (1), on which a device (2) for carrying out at least one processing step is formed. According to the invention, a slot (3), into which a sampling instrument (4) can be introduced, and means (5) for releasing a sample from the sampling instrument (4) arranged in the receptacle (3), are formed in the sample holder.

A hematology test slide has the same or similar dimensions as a chemical reagent test slide and an immunoassay test slide so that it may be used with these other slides on a single clinical instrument. The hematology slide includes, in order from top to bottom, a slide housing having a top housing member, a top cover slip, a U-shaped, transfer tape spacer, a bottom cover slip, a base gasket and a base plate. The U-shaped spacer has a curved end portion which defines a sample deposit area, where a blood sample is pipetted thereon, and a pair of straight, parallel, spaced apart legs extending from the curved end portion. The legs define a read area. A blood sample deposited on the hematology slide at the sample deposit area will flow by capillary action to the read area, where optical measurements are made on the sample.

Improved sub-assemblies and methods of control for use in a diagnostic assay system adapted to receive an assay cartridge are provided herein. Such sub-assemblies include: a brushless DC motor, a door opening/closing mechanism and cartridge loading mechanism, a syringe and valve drive mechanism assembly, a sonication horn, a thermal control device and optical detection/excitation device. Such systems can further include a communications unit configured to wirelessly communicate with a mobile device of a user so as to receive a user input relating to functionality of the system with respect to an assay cartridge received therein and relaying a diagnostic result relating to the assay cartridge to the mobile device.

A biological detecting cartridge adapted to gather a detected fluid includes a collection port, a first flowing layer structure communicating with the collection port and a second flowing layer structure communicating with the first flowing layer structure. The first and the second flowing layer structures are disposed in different levels in the biological detecting cartridge. A flowing method of a detected fluid in a biological detecting cartridge is further provided.

A detection device for cannabinoid use including a base unit and a display screen disposed on the base unit. A central processing unit and a tetrahydrocannabinol testing device are disposed within the base unit. A testing slot is disposed on a bottom portion of the base unit, with a back end of the testing slot disposed within the tetrahydrocannabinol testing device. Each of a plurality of testing strips is slidably and removably disposed within the testing slot. A printer has a pair of T-shaped attachment extensions. Each of the pair of attachment extensions and a universal serial bus plug disposed on the printer simultaneously removably and slidably engages each of a pair of attachment slots and a universal serial bus port disposed on the base unit, respectively. The tetrahydrocannabinol testing device is configured to analyze and calculate the presence and amount of tetrahydrocannabinol in a person's bloodstream.