Test system and procedure for the determination of NAD (P) H
First Claim
1. A test system useful for providing an extended range of measurement for the determination of NADH, NADPH, NAD+ or NADP+, or of a substrate or enzyme which reacts with the formation or consumption of NADH or NADPH, comprising effective amounts of at least two redox indicators which, independently of each other, act as electron acceptors with respect to NAD(P)H and which each have different electrochemical potentials.
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Abstract
A test system having an extended range of measurement and an appropriate procedure for the determination of NAD(P)H or of substrates or enzymes which react to form or consume NAD(P)H in fluids is provided. The test system contains, at one and the same time, several substances acting independently of one another as electron acceptors with respect to NAD(P)H and having different electrochemical potentials. Addition of the test system to the sample solution gives rise to different end products which can be analytically differentiated and which are evaluated visually or by other techniques of measurement.
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20 Claims
- 1. A test system useful for providing an extended range of measurement for the determination of NADH, NADPH, NAD+ or NADP+, or of a substrate or enzyme which reacts with the formation or consumption of NADH or NADPH, comprising effective amounts of at least two redox indicators which, independently of each other, act as electron acceptors with respect to NAD(P)H and which each have different electrochemical potentials.
- 15. A method for the determination of NADH, NADPH, NAD+ or NADP+ in an aqueous sample solution, comprising treating the sample solution with at least two system compatible redox substances which act, independently of one another, as electron acceptors with respect to NADH or NADPH and which have different electrochemical potentials, whereby there are sequentially formed corresponding, different end products, and analytically measuring each end product.
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20. An absorbent material impregnated with a test system useful for providing an extended range of measurement for the determination of NADH, NADPH, NAD+ or NADP+, or of a substrate or enzyme which reacts with the formation or consumption of NADH or NADPH, comprising effective amounts of at least two redox indicators which, independently of each other, act as electron acceptors with respect to NAD(P)H and which have different electrochemical potentials.
Specification