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Ammonia (ammonia ion) measurement method and ammonia (ammonia ion) diagnosis/measurement kit

A technology of ammonia ions and reagents, which is applied in the field of medical/food inspection and determination, and can solve problems such as undiscovered blood ammonia determination methods

Inactive Publication Date: 2012-07-04
SUZHOU ANJ BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Searching Chinese patents, only found 87105593.7 patent application which discloses a quick-frozen cup for measuring blood ammonia, but did not find an ideal method for measuring blood ammonia

Method used

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  • Ammonia (ammonia ion) measurement method and ammonia (ammonia ion) diagnosis/measurement kit
  • Ammonia (ammonia ion) measurement method and ammonia (ammonia ion) diagnosis/measurement kit
  • Ammonia (ammonia ion) measurement method and ammonia (ammonia ion) diagnosis/measurement kit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] Embodiment 1: the mensuration of ammonia (ammonia ion) content in blood plasma

[0122] 1) Preparation of standard samples

[0123] Dissolve a certain amount of ammonia salt in water or buffer solution, and then adjust the ammonia concentration to 100 micromole / liter;

[0124] 2) Pretreatment of samples to be tested

[0125] Plasma samples are used as samples to be tested without pretreatment;

[0126] 3) Blank sample

[0127] Described water or buffer solution are used as blank sample, and its ammonia concentration is 0 micromole / liter;

[0128] B. Preparation of reagent solution:

[0129] The ammonia diagnosis / measurement reagent of the present embodiment is a single-dose reagent, which contains:

[0130] Tris(carboxymethyl)aminomethane-hydrochloric acid buffer 100mmol / L

[0131] Glycerin 1mol / L

[0132] NADP + 0.25mmol / L

[0133] Ferredoxin Nitrite Reductase 16000U / L

[0134] Nitrate reductase 18000U / L

[0135] Nitric oxide plus...

Embodiment 2

[0149] Embodiment 2: the mensuration of ammonia (ammonia ion) content in blood plasma

[0150] 1) Preparation of standard samples

[0151] A certain amount of ammonia salt is dissolved in water, and then the concentration of ammonia (ammonia ion) is adjusted to 100 micromole / liter, as a standard sample;

[0152] 2) Preparation of samples to be tested

[0153] Plasma samples are used as samples to be tested without pretreatment;

[0154] 3) Blank sample

[0155] Described water is used as blank sample, and its ammonia (ammonia ion) concentration is 0 micromole / liter;

[0156] B. Preparation of reagent solution:

[0157] Ammonia (ammonia ion) diagnostic / determination reagent is a two-dose reagent, which contains:

[0158] Reagent 1 with the following composition:

[0159] Phosphate buffer 100mmol / L

[0160] NAD + 0.25mmol / L

[0161] Oxidized ferredoxin 5mmol / L;

[0162] Reagent 2 with the following composition:

[0163] Phosphate bu...

Embodiment 3

[0184] Embodiment 3: the mensuration of ammonia (ammonia ion) content in plasma sample

[0185] The mode of operation of this embodiment is the same as embodiment 2, but this embodiment:

[0186] B. Preparation of reagent solution:

[0187] Ammonia (ammonia ion) diagnostic / assay reagent is a three-dose reagent that contains:

[0188] Reagent 1 with the following composition:

[0189] Tris(carboxymethyl)aminomethane-hydrochloric acid buffer 100mmol / L

[0190] NAD + 0.25mmol / L

[0191] Oxidized ferredoxin 6mmol / L;

[0192] Reagent 2 with the following composition:

[0193] Tris(carboxymethyl)aminomethane-hydrochloric acid buffer 100mmol / L

[0194] Sodium chloride 2mol / L

[0195] Nitrate reductase 28000U / L

[0196] Nitric oxide plus dioxygenase 50000U / L;

[0197] Reagent 3 with the following composition:

[0198] Tris(carboxymethyl)aminomethane-hydrochloric acid buffer 100mmol / L

[0199] Sodium chloride 2mol / L

[0200] Ferredoxin nitrit...

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Abstract

The invention relates to a method for measuring ammonia (ammonia ion) content by using a double enhance method, an enzymatic colorimetric method and a couple reaction technology, and components and constituents of a reagent. The technical principle of the measurement is finished according to series catalytic reaction of ferredoxin-nitrite reductase, nitrate reductase and nitric oxide dioxygenase. The invention also relates to an ammonia (ammonia ion) diagnosis / measurement kit. The measurement method of the invention is high in sensitivity and low in error; therefore, the measurement method and the kit can be widely applied to clinical medical examination / food inspection.

Description

technical field [0001] The present invention relates to the technical field of medical / food inspection and determination, more specifically, the present invention relates to ammonia (ammonia ion) diagnosis / measurement method and kit thereof. Background technique [0002] Ammonia determination methods include micro-diffusion method, ion exchange method, enzymatic method and ammonia electrode method. The most widely used methods are enzymatic method and blood ammonia analyzer analysis method based on ion selective electrode. [0003] The diffusion method is that after the sample is alkalized, NH is released 3 , Titrate the released ammonia with acid, or use the Nessler reaction to form brown-yellow mercuric ammonium iodide for colorimetry. These methods need to be alkalized, and the endogenous ammonia formation will affect the accuracy and precision, so they are rarely used at present; the ion exchange method is more accurate than the diffusion method, and the CV is 8% to 13...

Claims

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Application Information

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IPC IPC(8): G01N33/52G01N21/31G01N21/33C12Q1/26
Inventor 王尔中
Owner SUZHOU ANJ BIOTECHNOLOGY CO LTD
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