The present invention is comprised in the field of glycobiology. In particular, it relates to a method for separating, in biological samples, the fraction bound to or associated with sulfated glycosaminoglycans (GAGs), and the applications thereof in biomedicine, such as for identifying the profile of glycoproteins or the profile of lipids bound to or associated with sulfated GAGs, detecting an alteration in the pattern of glycosylation by sulfated GAGs, identifying biomarkers for the diagnosis, for the prognosis, for monitoring the progression of a disease or of the effect of a therapy, or for identifying compounds suitable for the treatment of a disease. The invention also relates to methods for diagnosing mucopolysaccharidosis and for diagnosing and determining the prognosis of a kidney disease.

Methods, kits and reagents are provided for increasing the sensitivity of detecting the presence or absence of endospores by increasing the available protein for detection. The methods are fast and amendable to testing in a non-laboratory setting and use a protein detection reagent and solid microparticles.

This present disclosure provides methods and compositions that can be used to quantify cfDNA in biofluids using a hybridization approach.

The present invention relates to peptides, in particular dodecapeptide-containing coating agents, adhesion promoters or adhesives for oxidic surfaces, a multilayer composite or a coated substrate, containing compounds which are formed entirely or in part of dodecapeptides as adhesion promoters between at least two adjacent layers of the composite or between the coating and the substrate, and to dodecapeptides that can be used as coating agents, adhesion promoters or adhesives for oxidic surfaces.

A dry test piece for albumin measurement is based on the improved BCP method as a principle, and enables the measurement of albumin at a high sensitivity. The test piece includes a support; and a reagent holding layer provided on the support and on which a sample is spotted. The reagent holding layer contains a protein denaturation agent (component A), an SH reagent (component B), bromcresol purple (component C), and a nonionic surfactant (component D). In the reagent holding layer, a weight ratio (D/C) of the component D to the component C is 0.3 to 13, a content of the component C relative to an amount of the spotted sample is 0.4 ?g/?L to 5.4 ?g/?L, a content of the component D relative to the amount of the spotted sample is 25 ?g/?L or less.

A method for analyzing one or more nitrogen-containing compounds is disclosed. In the method, a ninhydrin-containing composition is irradiated with UV light in an activation zone to produce a ninhydrin reagent containing hydrindantin. The ninhydrin reagent is passed to a reaction zone. In the reaction zone the ninhydrin reagent is contacted with the nitrogen-containing compounds.

Squaraine dyes are used to detect the presence of protein in a test sample, which is a substance that may contain protein. A squarine dye is placed in water, and in some instances joined with an aggregation agent, to create an aqueous dye solution. That dye solution is joined with a test sample. When the dye solution is joined with the test sample and the resultant test solution is excited by the application of photons, a resulting fluorescence or absence thereof reveals if protein was present in the test sample.

Described herein is a method for mixing unequal amounts of two reagents to produce a detectable reaction in a microfluidic chip. In one example, there is a fluorescent microfluidic urinary albumin chip (UAL-Chip) that exploits the nonimmunological fluorescent assay. In this chip, we constructed a passive and continuous mixing module, in which the loading process requires only an inexpensive dropper, and the signal is stable over time, as discussed below. We applied a pressure-balancing strategy based on the immiscible oil coverage which highly improves the precision in controlling the mixing ratio of sample and dye. The UAL-Chip has achieved an estimated limit of detection (LOD) of 8.4 g/ml using albumin standards, which is below the 30 g albumin per ml urine level considered to be indicative of kidney damage.

An imaging system (10) and associated method for detection of protein contamination on a surgical instrument (100) that has been treated with a fluorescing stain, wherein fluorophors in the stain are capable of emitting light of an emitted type when both excited by light of an excitation type and in contact with a protein are provided. The system comprises a light tight chamber (14) for receiving the instrument (100). Inside the chamber (14) are both visible light sources (20) and excitation light sources (22) for respectively illuminating the chamber with visible and excitation type light. A digital camera (30) is able to capture a first image of the instrument (100) as illuminated by the visible light, and a second image, of patterns of fluorescence produced by the fluorophors in the stain corresponding to protein contamination. The first and second images are combined to produce a composite image of the instrument (100) highlighting the areas of protein contamination. Associated software can be used to analyse the images so as to determine a level of protein contamination.

Compounds and compositions for determining the level of antithrombin (ATIII) in a sample are described along with a system for determining the level of ATIII in a point-of-care setting. Methods of forming the compounds and compositions are also described. Methods of using the compounds and compositions to quantify the level of ATIII in a subject are further described. A system and apparatus are provided that determine the level of ATIII in a point-of-care setting in an efficient manner to facilitate determining a dosage or heparin or ATIII to administer to a patient.