Human β-hydroxybutyric acid (β-OHB) enzyme-linked immunosorbent assay kit instruction manual

The human beta-hydroxybutyric acid (β-OHB) enzyme-linked immunoassay kit is for research use only.

examination range:                                                            96T

1 μ mol/L - 32 μ mol/L

purpose of usage:

This kit is used to determine the content of β-hydroxybutyric acid ( β- OHB) in human serum, plasma and related liquid samples .

Experimental principle

Determination of human beta] samples hydroxybutyrate (β -OHB) This kit double antibody sandwich method. With purified human beta] hydroxybutyrate (β -OHB) antibody-coated microtiter plate wells the immobilized antibody, monoclonal antibody-coated wells were added beta] hydroxybutyrate (β -OHB), then with HRP labeled The β-hydroxybutyric acid ( β- OHB) antibody binds to form an antibody - antigen - enzyme - labeled antibody complex, which is thoroughly washed and then added to the substrate TMB for color development. TMB in HRP enzyme blue, yellow and eventually converted to the action of an acid. The color depth is positively correlated with beta hydroxybutyrate ( β- OHB) in the sample . Then determined by comparing the absorbance (OD) at a wavelength of 450nm, the standard curve samples human beta] hydroxybutyrate (β -OHB) concentration.

Kit composition

1

30 times concentrated washing solution

20ml × 1 bottle

7

Stop solution

6ml × 1 bottle

2

Enzyme standard reagent

6ml × 1 bottle

8

Standard ( 64 μ mol/L )

0.5ml × 1 bottle

3

Enzyme label coated plate

12 × 8 pieces of hole

9

Standard dilution

1.5ml × 1 bottle

4

Sample diluent

6ml × 1 bottle

10

Instruction manual

1 copy

5

Developer A solution

6ml × 1 bottle

11

Sealing film

2 sheets  

6

Developer B solution

6ml × 1 / bottle

12

sealed bag

1

Specimen requirements

1 . The specimens should be extracted as soon as possible after collection, and the extraction should be carried out according to the relevant literature. The experiment should be carried out as soon as possible after extraction. If you can't test it right away, you can put the specimen in -20 °C Save, but should avoid repeated freezing and thawing

2. Samples containing NaN3 could not be detected because NaN3 inhibited horseradish peroxidase ( HRP ) activity.

Steps

1.          Dilution of Standards: This kit provides a standard of the original standard, which can be diluted in a small tube according to the following chart.

32 μ mol/L

Standard No. 5

Add 150 μl of standard dilution to 150 μl of the original standard

16 μ mol/L

Standard No. 4

150μl No. 5 standard Standard dilution was added 150μl

8 μ mol/L

Standard No. 3

150μl of 4 standards Standard dilution was added 150μl

4 μ mol/L

Standard 2

150μl standard No. 3 Standard dilution was added 150μl

2 μ mol/L

Standard No. 1

150 μl of Standard 2 is added to 150 μl of standard dilution

2.          Adding samples: blank holes (the blank control wells are not added with the sample and the enzyme standard reagent, the other steps are the same), the standard holes, and the sample holes to be tested. Coated ELISA plates were standard accurate pipetting 50 μl, the sample holes before adding the sample dilution 40 μ l, was then combined with the test sample 10 μ l (final dilution is 5-fold). Add the sample to the bottom of the well of the microplate, try not to touch the wall of the well, and shake gently to mix.

3.          Incubation: sealing with a sealing film 37 °C Incubated for 30 minutes.   

4.          Solution: 30 times concentrated washing solution diluted with distilled water 30 times and used

5.          Washing: Carefully remove the sealing film, discard the liquid, dry it, fill each well with the washing solution, let stand for 30 seconds, then discard it, repeat 5 times, and pat dry.

6.          Add enzyme: 50 μl of enzyme labeling reagent was added to each well , except for blank wells.

7.          Incubation: The operation is the same as 3 .

8.          Washing: The operation is the same as 5 .

9.          Color development: add 50 μl of the developer to each well , then add 50 μl of the developer , gently shake and mix. 37 °C Protected from light for 15 minutes .

10.      Termination: 50 μl of stop solution was added to each well to terminate the reaction (when the blue color turned yellow).

11.      Measurement: The absorbance ( OD value) of each well was measured in sequence with a blank air conditioner of zero and a wavelength of 450 nm . The measurement should be carried out within 15 minutes after the addition of the stop solution .

Summary of operating procedures:
1. Prepare reagents, samples and standards
2. Add prepared samples and standards and react at 37 ° C for 30 minutes.
3. Wash the plate 5 times, add the enzyme standard reagent, and react at 37 ° C for 30 minutes.
4. Wash the plate 5 times, add the coloring solution A, B, and react at 37 ° C for 10 minutes.
5. Add stop solution
OD value within 6.15 minutes
7. Calculation

Calculation

   Taking the concentration of the standard as the abscissa and the OD as the ordinate, draw a standard curve on the coordinate paper, and find the corresponding concentration from the standard curve according to the OD value of the sample ; multiply by the dilution factor; or use the concentration of the standard calculate the standard curve and linear regression equation OD value of the sample OD value into the equation to calculate the concentration of the sample, then multiplied by the dilution factor, the actual concentration of the sample.

Precautions

1 . The kit should be taken out from the refrigerated environment and should be used at room temperature for 15-30 minutes before use. If the enzyme label is unsealed after opening, the slats should be stored in a sealed bag.

2 . Concentrated washing liquid may crystallize out. When diluted, it can be heated and dissolved in a water bath. The washing will not affect the result.

3 . The sampler should be used for each step, and the accuracy should be corrected frequently to avoid test errors. It is best to control the loading time within 5 minutes. If the number of specimens is large, it is recommended to use a gun.

4.   Please make a standard curve at the same time of each measurement, it is best to make a double hole. If the content of the substance to be tested in the specimen is too high (the OD value of the sample is larger than the OD value of the first hole of the standard well ), please first dilute the sample dilution with a certain multiple ( n times) and then measure it. When calculating, multiply the total dilution by the total dilution. Multiple ( × n × 5 ).

5.   The sealing film is intended for single use only to avoid cross-contamination.

6 . Please keep the substrate away from light.

7 . Strictly follow the instructions of the manual, the test results must be based on the microplate reader reading .

8 . All samples, washings and various wastes should be treated as infectious materials.

9 . The different batch components of this reagent must not be mixed.

10. If it is different from the English manual, the English manual shall prevail.

Storage conditions and expiration date

1 . The kit of preservation:; 2 -8 °C .

2 . Validity: 6 months

Common medical masks are used to block spouts exhaled from the oral cavity and nasal cavity, and can be used for one-time hygiene care in ordinary medical environments with the lowest protection level. It is suitable for general hygiene care activities, such as sanitary cleaning, liquid distribution, cleaning bed units, etc., or the blocking or protection of particles other than pathogenic microorganisms such as pollen.
Conforms to the relevant registered product standard (YZB), generally lacks the filtration efficiency requirements for particles and bacteria, or the filtration efficiency requirements for particles and bacteria are lower than medical surgical masks and medical protective masks, only reaching 20.0% for 0.3μm diameter aerosols -25.0% protection effect, can not reach the filtration efficiency of particles and bacteria, can not effectively prevent pathogens from invading through the respiratory tract, can not be used for clinical invasive operations, nor can it protect particles and bacteria and viruses, only limited to dust particles Or aerosol plays a certain mechanical barrier.

Instructions:
1. Carefully cover the mouth and nose with a mask and fasten it to minimize the gap between the face and the mask;
2. Avoid touching the mask when using it-after touching the used mask, for example to remove or clean the mask, wash your hands with soap and water or use alcohol hand sanitizer;
3. After the mask is wet or contaminated with moisture, replace with a new clean and dry mask;
4. Do not reuse disposable masks. Disposable masks should be discarded after each use.

Common Medical Mask

Medical Face Mask,Disposable Medical Mask,Disposable Protective Face Mask,Non Woven Surgical Face Mask

Guangzhou Aikangli Medical Technology Co., Ltd. , https://www.aikanli.com