79 results about "Immunological tests" patented technology

Provided is a pretreatment liquid in a specimen and a pretreatment method required for accurate and simple inspection for inspecting influenza virus by immune chromatography. A specimen, sampled from an organism for inspecting influenza, such as pituita, phlegm, and a pharynx wiping liquid, is treated by a pretreatment liquid containing a nonionic surface active agent and 0.3M alkali metal ions.

The invention relates to the technical field of blood coagulants, in particular to a blood coagulant for a blood collection container. The blood coagulant is characterized by consisting of a blood wall attachment preventing agent, thrombin, phosphatidyl ethanolamine, silica micropowder and ethanol, wherein the ethanol is a solvent; and the blood wall attachment preventing agent, the thrombin, the phosphatidyl ethanolamine and the silica micropowder are solutes. The blood coagulant can be applied to vacuum blood collection tubes or other non-vacuum blood collection containers. By the blood coagulant, blood collected into the container can be coagulated within 10 minutes at room temperature of between 2 and 35 DEG C; and serum can be subjected to centrifugal separation within 15 to 30 minutes. The blood coagulant has long retention time, little influence on coagulation speed by temperature and no influence on biochemical and immunological test detection indexes including ion ingredients, and is not influenced by the materials of the blood collection containers, so no matter glass tubes or plastic tubes are used, hemolysis is not caused and blood is not attached to the walls.

The invention concerns a method for increasing the dynamic measuring range of especially immunological test elements in particular immunological chromatography test strips that can be evaluated optically that are based on specific binding reactions. The invention enables the dynamic measuring range of test elements based on specific binding reagents, especially of immunological test elements to be shifted towards higher analyte concentrations without impairing the lower detection limit. For this purpose it is proposed according to the invention that at least two zones are provided in or on the test element which contain reagents that generate detectable signals of different strengths due to different affinities for the analyte (for example in the case of antibodies that have different affinities for the analyte) or due to different principles of interaction with the analyte or with other reagents involved in the analyte detection (for example antibodies directed against the analyte in one zone and an analyte analogue in another zone). The signals in the at least two zones are used to evaluate the analyte concentration-signal strength relationship and are used to determine the analyte by means of a suitable method (correlation).