Porcine albumin
(
ALB
)
Enzyme-linked immunoassay kit instructions
This kit is for research use only.
Experimental principle
This kit uses double antibody sandwich method to determine porcine albumin in specimens.
(
ALB
)
Level. Purified porcine albumin
(
ALB
)
The antibody is coated with a microplate to prepare a solid phase antibody, and albumin is sequentially added to the microwell of the coated monoclonal antibody.
(
ALB
)
And HRP-labeled albumin
(
ALB
)
The 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 is converted to blue under the catalysis of HRP enzyme and converted to the final yellow color by the action of an acid. The depth of the color and the albumin in the sample
(
ALB
)
Positive correlation. Determination of absorbance at 450 nm using a microplate reader
(
OD value
)
Calculate the porcine albumin in the sample by the standard curve
(
ALB
)
concentration.
Porcine albumin
(
ALB
)
Enzyme Linked Immunoassay Kit
composition
130 times concentrated washing solution 20ml × 1 bottle 7 stop solution 6ml × 1 bottle
2 enzyme standard reagent 6ml × 1 bottle 8 standard
(
1600μg/ml
)
0.5ml × 1 bottle
3 enzyme label coating plate 12 holes × 8 9 standard dilutions 1.5ml × 1 bottle
4 sample dilution 6ml × 1 bottle 10 instructions 1 copy
5 color developing agent A liquid 6ml × 1 bottle 11 sealing film 2 sheets
6 color developer B liquid 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 the test cannot be performed immediately, the specimen can be stored at -20 °C, but repeated freezing and thawing should be avoided.
2. Cannot detect samples containing NaN3, because NaN3 inhibits horseradish peroxidase
(
HRP
)
active.
Porcine albumin
(
ALB
)
Enzyme Linked Immunoassay Kit
Steps
1. Dilution of standard: This kit provides one original standard, which can be diluted in a small tube according to the following chart.
Add 200 μl of standard dilution to the original standard of 150 μl of the standard of 800 μg/ml No. 5
400 μg/ml No. 4 standard 150 μl of No. 5 standard added 150 μl standard dilution
200 μg/ml No. 3 standard 150 μl of No. 4 standard added 150 μl standard dilution
100 μg/ml No. 2 Standard 150 μl of No. 3 Standard Add 150 μl Standard Diluent
50 μg/ml No. 1 Standard 150 μl of No. 2 Standard Add 150 μl Standard Diluent
2. Sample loading: separate blank holes
(
Blank control wells are not added with samples and enzyme-labeled reagents, and the remaining steps are the same.
)
, standard hole, sample hole to be tested. Accurately load 50μl of the standard on the enzyme-labeled plate, add 40μl of the sample dilution to the well to be tested, and then add 10μl of the sample to be tested.
(
The final dilution of the sample is 5 times
)
. 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: The plate was sealed with a sealing film and incubated at 37 ° C for 30 minutes.
4. Dosing: 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 liquid, 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, and develop at 37 ° C for 10 minutes.
10. Termination: 50 μl of stop solution per well, stop the reaction
(
At this time, the blue turns yellow.
)
.
11. Determination: The absorbance of each well was measured sequentially with blank air conditioner zero and 450 nm wavelength.
(
OD value
)
. The measurement should be carried out within 15 minutes after the addition of the stop solution.
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 linear regression equation of the standard curve with the OD value, substitute the OD value of the sample into the equation, calculate the sample concentration, and multiply by the dilution factor, which is the actual concentration of the sample.
Porcine albumin
(
ALB
)
Enzyme Linked Immunoassay Kit
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 product hole.
)
, please first dilute a certain multiple with the sample diluent
(
n times
)
After the measurement, please multiply the total dilution factor by the end of the calculation.
(
×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
Porcine albumin
(
ALB
)
Enzyme Linked Immunoassay Kit
The operation of the manual is carried out, and the result of the test must be determined by the reading of the microplate reader.
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.
Storage conditions and expiration date
1. Kit storage: 2-8 ° C.
2. Validity: 6 months
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