Provided herein are methods of amplifying and detecting drug resistance markers (e.g., antibiotic resistance genes) from pathogens in complex samples (e.g., blood), as well as related panels and compositions (e.g., systems, cartridges, and kits).

The present application discloses methods and apparatus for detecting a complex including an analyte that include contacting a sample in a solution with a population of functionalized beads of a first type, which are magnetic functionalized beads and are functionalized to include a first moiety that associates with an analyte under suitable conditions, contacting the sample solution with a population of functionalized beads of a second type, which are functionalized to include a second moiety that associates with the analyte under suitable conditions, contact resulting in formation of a complex including one of the first type of functionalized bead, the analyte, and one of the second type of functionalized bead, and detecting the complex including the analyte by detecting magnetic fields produced by the magnetic functionalized bead and by detecting the functionalized bead of the second type associated with the analyte in the complex.

The present application relates to detection units and methods for detecting one or more target analytes in a sample using a complex formed by a target and first and second probes, wherein the complex comprises an elongated region, a particle that is coupled to the first probe, and a solid support that is coupled to the second probe. Specific binding of a target analyte can be distinguished from non-specific binding of the particle by measuring the displacement of the particle.

Superparamagnetic nanoparticle-based analytical method comprising providing a sample having analytes in a sample matrix, providing a point of care chip having analytical regions, each of which is a stationary phase having at least one or more sections, labeling each of the analytes with a superparamagnetic nanoparticle and immobilizing the labeled analytes in the stationary phase, providing an analytical device having a means for exciting the superparamagnetic nanoparticles in vitro and a means for sensing, receiving, and transmitting response of the excited superparamagnetic nanoparticles, placing the chip in the analytical device and exciting the superparamagnetic nanoparticles in vitro, sensing, receiving, and transmitting the response of the superparamagnetic nanoparticles, and analyzing the response and determining characteristic of the analytes, wherein the response of the superparamagnetic nanoparticles comprises harmonics. The present invention also provides the hybrid point of care chip and analyzer to be used in the analytical method.

The present application relates to detection units and methods for detecting one or more target analytes in a sample using a complex formed by a target and first and second probes, wherein the complex comprises an elongated region, a particle that is coupled to the first probe, and a solid support that is coupled to the second probe. Specific binding of a target analyte can be distinguished from non-specific binding of the particle by measuring the displacement of the particle.

A system for detecting analytes in a test sample, and a method for processing the same, is provided. The system includes a cartridge reader unit that has a control unit and a pneumatic system, and a cartridge assembly that prepares the samples with mixing material(s) through communication channels. The assembly has a memory chip with parameters for preparing the sample and at least one sensor. The assembly, pneumatic system, and control unit operate together to prepare the sample and provide the prepared sample to the sensor for detecting analytes, and also process measurements from the sensor to generate test results.

Disclosed herein are detection devices, systems, and methods that use magnetic nanoparticles (MNPs) to allow molecules to be identified. Embodiments of this disclosure include magnetic sensors (e.g., magnetoresistive sensors) that can be used to detect temperature-dependent magnetic fields (or changes in magnetic fields) emitted by MNPs, and, specifically to distinguish between the presence and absence of magnetic fields emitted, or not emitted, by MNPs at different temperatures selected to take advantage of knowledge of how the MNPs' magnetic properties change with temperature. Embodiments disclosed herein may be used for nucleic acid sequencing, such as deoxyribonucleic acid (DNA) sequencing.

Superparamagnetic nanoparticle-based analytical method comprising providing a sample having analytes in a sample matrix, providing a point of care chip having analytical regions, each of which is a stationary phase having at least one or more sections, labeling each of the analytes with a superparamagnetic nanoparticle and immobilizing the labeled analytes in the stationary phase, providing an analytical device having a means for exciting the superparamagnetic nanoparticles in vitro and a means for sensing, receiving, and transmitting response of the excited superparamagnetic nanoparticles, placing the chip in the analytical device and exciting the superparamagnetic nanoparticles in vitro, sensing, receiving, and transmitting the response of the superparamagnetic nanoparticles, and analyzing the response and determining characteristic of the analytes, wherein the response of the superparamagnetic nanoparticles comprises harmonics. The present invention also provides the hybrid point of care chip and analyzer to be used in the analytical method.

Provided is a magnetic signal detection chip. Each flow sensing component thereof includes lead portions and notch portion(s) located between the adjacent lead portions, wherein the notch portion(s) is(are) located in the flow path and at least a part of each lead portion adjacent to the notch portion is exposed to the chemical fluid, so that the flow sensing component(s) is(are) conducted when the chemical fluid completely covers the notch portion(s). Thus one could regulate the processing steps according to the sensing results of the flow sensing component, which can avoid inaccurate detection results. Further provided is a detection card including the magnetic signal detection chip and further provided is a nucleic acid detection device including the detection card. Further provided is a method of detecting composition containing target DNA fragment in chemical fluid.

Described are various embodiments of methods, devices, systems and kits for magnetic levitation-based separation of mixtures or populations of particles that include various types of particles. Some embodiments of such methods, devices, systems and kits are useful for magnetic levitation-based separation of mixtures or populations of cells that include various cell types. Some other embodiments of the described methods, devices, systems and kits are useful for magnetic levitation-based separation of mixtures or population of cellular or mixtures or population of biological molecules.