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本說明書由上海勁馬實(shí)驗(yàn)設(shè)備有限公司提供。大鼠視黃醇結(jié)合蛋白4Elisa試劑盒僅供科研使用，咨詢。
Rat Retinol binding protein 4(RBP-4)
FOR RESEARCH USE ONLY
Assay range：0.7μg/L -25μg/L 96 determinations
Purpose
This kit allows for the determination of RBP-4 concentrations in Rat serum, cell
culture supernates and other biological fluidsPrinciple of the assayThe kit assay Rat RBP-4 level in the sample, use Purified Rat RBP-4 antibody to coatmicrotiter plate wells, make solid-phase antibody, then add RBP-4 to wells, Combined RBP-4
antibody which With HRP labeled, become antibody - antigen - enzyme-antibody complex, afterwashing Compley, Add TMB substrate solution,TMB substrate becomes blue color At HRPenzyme-catalyzed, reaction is terminated by the addition of a sulphuric acid solution and thecolor change is measured spectrophotometrically at a wavelength of 450 nm. Theconcentration of Rat RBP-4 in the samples is then determined by comparing the O.D. of thesamples to the standard curve.
Materials provided with the kit
1 wash solution 20ml×1bottle 7 Stop Solution 6ml×1 bottle
2 HRP-Conjugate reagent 6ml×1 bottle 8 Standard（48μg/L） 0.5ml×1 bottle
3 Microelisa stripplate 12well×8strips 9 Standard diluent 1.5ml×1bottle
4 Sample diluent 6ml×1 bottle 10 Instruction 1
5 Chromogen Solution A 6ml×1 bottle 11
Closure platemembrane2
6 Chromogen Solution B 6ml×1 bottle 12 Sealed bags 1
Specimen requirements
1. extract as soon as possible after Specimen collection,and according to the relevant2literature, and should be experiment as soon as possible after the extraction. If it can’t,specimen can be kept in -20 ℃ to preserve, Avoid repeated freeze-thaw cycles.
2. Can’t detect the sample which contain NaN3, because NaN3 inhibits HRP active.
Assay procedure
1. Dilute and add sample:Dilute Original density Standard as follow table:
24μg/L 5 Standard 150μl Original density Standard+150μl Standard diluent
12μg/L 4 Standard 150μl 5 Standard+150μl Standard diluent
6μg/L 3 Standard 150μl 4 Standard+150μl Standard diluent
3μg/L 2 Standard 150μl 3 Standard +150μl Standard diluent
1.5μg/L 1 Standard 150μl 2 Standard +150μl Standard diluent
2. Add sample: Set blank wells separay (blank comparison wells don’t add sample andHRP-Conjugate reagent, other each step operation is same). testing sample well. add Sampledilution 40μl to testing sample well, then add testing sample 10μl (sample final dilution is5-fold), add sample to wells , don’t touch the well wall as far as possible, and Gently mix.
3. Incubate: After closing plate with Closure plate membrane , incubate for 30 min at 37℃.
4. Configurate liquid: 30-fold(or 20-fold) wash solution diluted 30-fold (or 20fold) with distilledwater and reserve.
5. Washing: Uncover Closure plate membrane, discard Liquid, dry by swing, add washingbuffer to every well, still for 30s then drain, repeat 5 times, dry by pat.
6. Add enzyme: Add HRP-Conjugate reagent 50μl to each well, except blank well.
7. Incubate: Operation with 3.
8. Washing: Operation with 5.
9. Color: Add Chromogen Solution A 50ul and Chromogen Solution B 50ul to each well, evadethe light preservation for 10 min at 37℃
10. Stop the reaction: Add Stop Solution50μl to each well, Stop the reaction(the blue colorchange to yellow color).
11. Assay: take blank well as zero , Read absorbance at 450nm after Adding Stop Solution andwithin 15min.Steps description3Standard, Sample diluentAdd Standard, Sample diluent, incubate for 30 min at 37℃.
Wash 5 time,Add HRP-Conjugate reagent, incubate for 30 min at 37℃.
Wash 5 times,Add Chromogen Solution A and B, incubate for 10 min at 37℃.Add Stop SolutionRead absorbance at 450nm within 15 min
calculate
Calculate
Take the standard density as the horizontal, the OD value for the vertical ,draw thestandard curve on graph paper, Find out the corresponding density according tothe sampleOD value by the Sample curve, multiplied by the dilution multiple, or calculate the straight lineegression equation of the standard curve with the standard density and the OD value ,with thesample OD value in the equation, calculate the sample density, multiplied by the dilution factor,4the result is the sample actual density.
Important notes
1. The kit takes out from the refrigeration environment should be balanced 15-30 minutes inthe room temperature, ELISA plates coated if has not use up after opened, the plate shouldbe stored in Sealed bag.
2. washing buffer will Crystallization separation, it can be heated the water helps dissolvewhen dilute . Washing does not affect the result.
3. add Sample with sampler Each step, And proofread its accuracy frequently, avoids theexperimental error. add sample within 5 min, if the number of sample is much , recommendto use Volley .
4. if the testing material content is excessively higher (The sample OD is bigger than the firststandard well ),please dilute Sample (n-fold), Please diluente and multiplied by the dilutionfactor.（×n×5）.
5. Closure plate membrane only limits the disposable use, to avoid cross-contamination.
6. The substrate evade the light preservation.
7. Please according to use instruction strictly, The test result determination must take themicrotiter plate reader as a standard.
8. All samples, washing buffer and each kind of reject should according to infective materialprocess.
9. Do not mix reagents with those from other lots.
Storage and validity
1．Storage： 2-8℃.
2．validity： six months
