摘要:
A multilayer analytical element for quantitative analysis of bilirubin in a liquid sample by a diazo method, which comprises a laminated structure consisting essentially of:(1) a porous reagent layer containing an acidic binder and a diazonium salt being reactive to bilirubin to produce azobilirubin;(2) an absorbent layer capable of absorbing an excessive liquid portion; and(3) a liquid-impermeable light-transmissive support.
摘要:
A dry-type analytical element suitable for measuring enzyme activity of in a liquid sample, characterized by incorporating a polyacrylamide, polymethacrylamide or their derivatives into at least one water-permeable layer. The background concentration of the dry-type analytical element exhibits minimal increase even under a fluorescent light, and allows an accurate measured value to be easily obtained.
摘要:
In a dry analytical element for the determination of creatine kinase enzymatic activity is disclosed, comprising at least one porous medium and at least one water permeable layer having a liquid contact relation with the porous medium, the porous medium or the water permeable layer contains creatine phosphoric acid, ADP, a thiol compound as a creatine kinase activation agent, glucose, hexokinase, G6PDH, NAD.sup.+, an electron transmission agent and a formazane dye forming tetrazolium salt, the improvement wherein at least one water permeable layer having a liquid contact relation with the porous medium contains a formazane dye forming tetrazolium salt and not more than 16 g/m.sup.2 of gelatin.
摘要:
An integral multilayer analytical element for use in the measurement of alkaline phosphatase activity, which comprises a porous spreading layer of woven fabric or knitted fabric containing an alkaline phosphatase-sensitive self-developing substrate, a buffer layer containing one or more compounds functioning as a phosphoric acid acceptor and a buffering agent and a support layer in a laminated form.
摘要:
A dry analytical element for assaying an enzyme in a liquid is disclosed, comprising a support having provided thereon at least a porous liquid-spreading layer composed of water non-absorbent fibers, wherein said porous liquid-spreading layer contains a substrate for an enzyme to be assayed and a hydrophilic polymer in an amount effective to decrease a spreading area by at least 20%. The analytical element exhibits high sensitivity and high reproducibility.
摘要:
A reagent sheet for the measurement of GGT (.gamma.-glutamyl transferase) activity comprising a porous sheet containing a cationic surfactant and a self-developable substrate upon contact with .gamma.-glutamyl transferase. An integral multilayer analytical element for the measurement of GGT activity, comprising a porous spreading layer containing a cationic surfactant and a self-developable substrate in response to contact with .gamma.-glutamyl transferase, a water-absorbing layer and a support in a laminated form. The substrate can be either .gamma.-glutamyl-p-nitroamilide or .gamma.-glutamyl-3-carboxy-4-nitroamilide.
摘要:
An analytical element for quantitative analysis of bilirubin in a liquid sample by a diazo method, characterized in that the bilirubin detection reagent is a non-diffusive aryldiazonium salt having in the aryl group at least one substituent selected from the group consisting of an alkoxycarbonyl group, an alkylaminosulfonyl group and an alkylaminocarbonyl group.
摘要:
It is an object of the present invention to provide a method capable of measuring a high concentration (up to 2500 U/L) of animal sample without dilutions, which is further capable of specifically measuring α-amylase even in a sample comprising animal α-amylase (EC 3.2.1.1) and glucoamylase (EC 3.2.1.3). The present invention provides a method for specifically measuring α-amylase contained in a non-human animal sample comprising α-amylase and glucoamylase without diluting said sample, wherein measurement is carried out by using an oligosaccharide having a protected nonreducing terminus and a p-nitrophenyl group at the reducing terminus thereof, and pH of reaction is 6 or more, and less than 7.
摘要:
The object of the invention is to provide a multilayer analytical element having a non-fibrous porous film with high film strength, which does not produce uneven coloration in the form of a white-out and which has high accuracy of analysis. The present invention provides a dry multilayer analytical element for the analysis of a liquid sample which comprises a water-non-transmitting planar support on one side of which at least one adhesion layer and a porous liquid-sample-developing layer are integrally layered in the mentioned order, wherein the porous liquid-sample-developing layer comprises a non-fibrous porous film whose bending fracture strength is 20 g weight or more and whose elongation ratio when pulled with a 50-g weight is 2% or less, and wherein a adhesion layer polymer binder is caused to become seeped up in the non-fibrous porous film to 2 to 50 μm.
摘要:
A dry-type analytical element for immunoassay having at least one water-permeable layer for measuring a ligand in a sample according to enzyme immunoassay, which comprises,(A) a water-soluble macromolecular substrate, and(B) an enzyme conjugated with antibody reacting with the ligand in the sample capable to act on the above water-soluble macromolecular substrate. The above analytical element further comprises,(C) a macromolecular antigen which is a conjugate of the ligand or its derivative with a macromolecular compound in the above water-permeable layer of the above dry-type analytical element.The invention can conduct highly sensitive and simple enzyme immunoassay.