摘要:
In a method for the enzymic-colorimetric determination of urea in clinical analyses, the improvement consisting in that the sample to be tested is admixed with a composite reagent composed by urease, a buffer, an alkali-metal salicylate and a nitroprusside and, after a short incubation, a hypochlorite is added, a short additional incubation is performed and the color is measured photometrically. By this method, two reagent systems are sufficient instead of the usual three.
摘要:
Process for enzymatic determination of glucose with a glucose-oxidase-peroxidase enzyme system involving the use of a reduced acceptor which is oxidized. As reduced acceptor in the enzymatic reaction catalyzed by peroxidase, a ferrocyanide salt is oxidized to ferricyanide; then a further reducing system is introduced, which system is oxidized by the ferricyanide, with the formation of a colored quinone compound, the reaction between ferricyanide and the reducing system taking place spontaneously.
摘要:
For taking measurements on fluids, such as biological fluids (e.g. blood and the like), a device is disclosed which is a cylindrical body insertable in a syringe or a similar sampling container and has on the exposed face a set of electrodes or probes which are connected via appropriate electric leads to processing and displaying devices which permit the taking of immediate readings of important parameters such as pH, temperature, partial pressures of gases and so on.
摘要:
A novel composition is disclosed for determining the activity of the alkaline phosphatase, which comprises a salt of p-nitrophenylphosphoric acid, a magnesium salt, sodium borate and 2-amino-2-hydroxymethyl-1,3-propanediol. The composition affords advantages over the known composition especially as regards sensitivity.
摘要:
A reagent containing a buffer suitable for maintaining the Ph of the reagent between 3-7, sulfanilic acid or sulfanilamide, a cupric soluble salt and an alkaline metal nitrite, for the detection and determination of bilirubin in the urine providing precise results and ready automation of the procedure, characterized in that it is a stable combination of all the substances used for such analysis.
摘要:
A reagent for the detection and quantitative determination of leukocytes by measuring the myeloperoxidase (MPO) activity of biological samples, which is sensitive for disclosing even only a few leukocytes, without interferences caused by hemoglobin even in the presence of several erythrocytes, and suitable for photometric readings in the visible spectrum region. The reagent comprises a buffer, a chromogen, a surface-active agent, at least an alkali metal halide, a hydroperoxide compound and optionally a reaction promoter.
摘要:
A kit including a reagent containing a buffer suitable for maintaining the pH of the reagent between 3-7, sulfanilic acid or sulfanilamide, a cupric soluble salt and an alkaline metal nitrite, for the detection and determination of bilirubin in the urine providing precise results and ready automation of the procedure, characterized in that it is a stable combination of all the substances used for such analysis.
摘要:
A composition for the determination of glucose in the kinetic mode comprising the enzymes glucose-oxidase and peroxidase, a buffer system, a component containing an aromatic ring with a phenolic hydroxyl attached to said ring, a component containing a reactive group containing a structure derived from 1-phenyl-5-pyrazolinone and a substance which inhibits glucose-oxidase but not peroxidase.
摘要:
A method and a combination of reagents are disclosed for determining the creatine kinase activity by inhibiting the action of creatine kinase, the improvement consisting in that adenosine - 5'- monophosphate is used in combination with an inorganic, preferably an alkali metal, fluoride. By so doing the masking effect of adenylate kinase are efficiently offset.