The present invention relates to a quantum dot-containing nanoparticle comprising: a core part; a quantum dot part bound to a surface of the core part; a shell part for protecting the core part and the quantum dot part; and a support part for supporting the binding of the core part and the shell part, wherein the nanoparticle exhibits a high occupied area and stable binding, thereby exhibiting improved luminous efficiency (QY) and brightness when detecting a biological sample (biomolecule).

An embodiment of the disclosure provides an immunodetection chip, an immunodetection device and a using method. The immunodetection chip includes a substrate and a cover plate. The substrate is disposed opposite to the cover plate to form a detection chamber. One side, facing the cover plate, of the substrate is fixedly provided with substrate antibodies. An inside wall of the detection chamber is provided with a detection member. The detection member is configured to output a corresponding electrical signal while adsorbing biological magnetic beads. The substrate antibodies match with target antigens.

The present invention relates to a sandwich immunoassay and kits for detecting in a biological sample cross-linked CTX-III, and its use in evaluating the efficacy of drugs targeting lysyl oxidases (LOXs). Cross-linked CTX-III can be used as a biomarker in diseases associated with fibrosis, including liver fibrosis, chronic intestinal disease, eosinophilic esophagitis and cancer.

Disclosed herein are systems and assays that employ magnetically susceptible beads and point-of-care devices comprising magnetic immunosensors to determine the amount of glial fibrillary acidic protein (GFAP) in a biological sample obtained from a subject.

Disclosed herein is a kit for detecting or quantifying a SARS-CoV-2 nucleocapsid phosphoprotein, including a first antibody, wherein a variable heavy chain domain comprises the amino acid sequence selected from the group consisting of SEQ ID NOs: 1, 3, 5, 7, 11, 13, 15, 17, 19, and 21, and a variable light chain domain comprises the amino acid sequence selected from the group consisting of SEQ ID NOs: 2, 4, 6, 8, 12, 14, 16, 18, 20, and 22; and a second antibody, wherein a variable heavy chain domain comprises the amino acid sequence selected from the group consisting of SEQ ID NOs: 9 and 13, and a variable light chain domain comprises the amino acid sequence selected from the group consisting of SEQ ID NOs: 10 and 14.

The present invention is intended to provide an immunochromatographic analyzer that enables a quick and easy, high-sensitivity detection of Mycoplasma pneumoniae, and thus more reliable and faster diagnosis of mycoplasma pneumonia. The immunochromatographic analyzer according to the present invention is for detecting Mycoplasma pneumoniae, and includes a sample adding section, a label-substance retaining section, a chromatographic medium section having a detection section, and an absorbing section. The label-substance retaining section and the detection section contain an antibody that strongly recognizes domain III of P30 protein of Mycoplasma pneumoniae consisting of the amino acid sequence of SEQ ID NO: 2.

A method of determining the concentration of at least one analyte in a plurality of samples by sequentially subjecting each sample to an analysis cycle comprises contacting the sample or a sample-derived solution with a sensor surface supporting a species capable of specifically binding the analyte or an analyte-binding species, detecting the amount of binding to the sensor surface, and regenerating the sensor surface to prepare it for the next analytical cycle, and based on the detected binding to the sensor surface determining the concentration of analyte in each sample using virtual calibration data calculated for each analysis cycle from real calibration data obtained by contacting the solid phase with samples containing known concentrations of analyte.

This application describes methods of measuring AAT polymer and kits for use in the same. Also described herein are methods for monitoring liver disease in AATD patients, methods for measuring AAT polymer in AATD patients, methods for treating AATD patients using an AAT modulator, and methods of measuring the efficacy of AAT modulators.

Described herein are monoclonal antibodies, assay kits and immumoassay methods for quantifying elastin fragments with a C-terminus amino acid sequence LPGGYGLPYT (SEQ ID NO: 1) in a patient biofluid sample, and uses thereof for detecting or quantifying fibrotic diseases such as chronic obstructive lung disease (COPD).

A diagnostic assay strip includes a first layer that includes an iron mobile labelled specific binding partner that will bind to and iron biomarker from a sample and produce an iron complex and a vitamin A mobile labelled specific binding partner that will bind to a vitamin A biomarker from the sample and produce a vitamin A complex. A second layer includes iron and vitamin A test regions, and a control region. The iron test region has immobilized specific binding partners that will bind to the iron complex. The vitamin A test region has immobilized vitamin A biomarker that will bind to vitamin A mobile labelled specific binding partner, which is not bound to the vitamin A biomarker, passing from the first layer to the second layer. The control region has a moiety which will non-specifically bind to and immobilize the iron and vitamin A labelled specific binding partners. Methods of using the diagnostic assay strip are also discussed.