Disclosed herein are devices for measuring, at one or more time points, one or more properties or changes in properties of a fluid sample. The devices may comprise a chamber defining an internal volume of the device suitable for receiving and retaining the fluid sample; a plurality of layers, the plurality comprising at least a bottom layer below the chamber and at least a substrate layer above the chamber, wherein: the substrate layer is linked to at least one suspended beam at each end of its length; the suspended beam is located above the chamber, the suspended beam having a face capable of physical contact with the fluid sample; and the suspended beam is configured to oscillate upon application of an actuating signal to at least one electrically conductive path, which runs across the suspended beam. Related methods and uses are also disclosed.

The invention relates to a new method of determining in a sample the presence or absence of one or more analyte members of a group of two or more analytes. The invention therefore relates to a multiplex assay for determining the presence or absence of each analyte in a group of multiple analytes. The assay uses aptamers and transmembrane pores.

The present invention relates to analytical testing devices comprising a single channel with micro-environment sensors and methods for assaying coagulation in a fluid sample applied to the micro-environment sensors, and in particular, to performing coagulation assays using a single channel with micro-environment sensors in a point of care test cartridge. For example, the present invention may be directed to a sample analysis cartridge including an inlet chamber configured to receive a biological sample and a conduit fluidically connected to the inlet chamber. The conduit includes a sensor chip including a first micro-environment sensor and a second microenvironment sensor, and a fluid lock valve. The sample analysis cartridge further includes a pump configured to push the biological sample over the first micro-environment sensor and the second microenvironment sensor to the fluidic lock valve such that the biological sample is positioned over the first micro-environment sensor and the second micro-environment sensor.

A chemiluminescent biosensor for detecting a coagulation factor in a blood sample including: a fluorogenic substrate for the coagulation factor, where the fluorogenic substrate includes a fluorescent dye; and a quencher conjugated with the fluorogenic substrate. The biosensor rapidly and accurately detects a coagulation factor in a blood sample including whole blood or plasma, thereby useful for minimizing or eliminating any reversal effect of anticoagulants.

Embodiments of the present disclosure provide a device including an on-chip electrode platform including one or more three dimensional laser scribed graphene electrodes, methods of making the on-chip electrode platform, methods of analyzing (e.g., detecting, quantifying, and the like) chemicals and biochemicals, and the like.

Provided is a method for purifying -thrombin and for quantifying -thrombin and its degradation polypeptides in a liquid proteinatious solution. The method employs a one-step anion exchange chromatography method. The method allows purification and/or quantification of a homogenous post-translationally modified -thrombin. The method can also be used for purification and/or quantification of -thrombin.

The present invention relates to analytical testing devices comprising a single channel with micro-environment sensors and methods for assaying coagulation in a fluid sample applied to the micro-environment sensors, and in particular, to performing coagulation assays using a single channel with micro-environment sensors in a point of care test cartridge. For example, the present invention may be directed to a sample analysis cartridge including an inlet chamber configured to receive a biological sample and a conduit fluidically connected to the inlet chamber. The conduit includes a sensor chip including a first micro-environment sensor and a second microenvironment sensor, and a fluid lock valve. The sample analysis cartridge further includes a pump configured to push the biological sample over the first micro-environment sensor and the second microenvironment sensor to the fluidic lock valve such that the biological sample is positioned over the first micro-environment sensor and the second micro-environment sensor.

A cell response assay for cancer is provided. In the assay, the levels of a cancer cell type biomarker, a chemo resistance biomarker and a metastatic potential biomarker are simultaneously measured in a biological sample.

The present invention relates to a target analyte detection composition based on a proximity proteolysis reaction and a target analyte detection method using same. More specifically, the present invention relates to a method for detecting a target analyte, the method comprising a step in which when a first binder and a second binder bind to the target analyte, hybridization is made between ssDNA linked to the first binder and ssDNA linked to a protease and between ssDNA linked to the second binder and ssDNA linked to a zymogen, whereby a signal generated by a proximity proteolysis reaction between the protease and the zymogen is detected.

The present invention relates to analytical testing devices including micro-environment sensors and methods for assaying coagulation in a fluid sample applied to the micro-environment sensors, and in particular, performing one or more types of coagulation assays using one or more micro-environment sensors in a single point of care combined test cartridge. For example, the present invention may be directed to test sensor including at least one transducer coated with a polymer layer. The polymer layer comprises a thrombin-cleavable peptide with a detectable moiety.