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This ELISA kit applies to the in vitro quantitative determination of Human CTGF concentrations in serum, plasma and other biological fluids.
This ELISA kit uses the Sandwich-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Human CTGF. Standards or samples are added to the micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human CTGF and Avidin-Horseradish Peroxidase (HRP) conjugate are added successively to each micro plate well and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Human CTGF, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Human CTGF. You can calculate the concentration of Human CTGF in the samples by comparing the OD of the samples to the standard curve.
|Detection Range||62.50—4000 pg/mL|
|Sample Volume Required Per Well||100 μL|
|Sample Type||Serum, plasma and other biological fluids|
This kit recognizes Human CTGF in samples. No significant cross-reactivity or interference between Human CTGF and analogues was observed.
As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique, washing technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data is provided below for reference only.
Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Human CTGF were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human CTGF were tested on 3 different plates, 20 replicates in each plate.
|Intra-assay Precision||Inter-assay Precision|
|C V (%)||5.58||5.34||3.99||5.28||4.18||3.36|
The recovery of Human CTGF spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.
|Sample Type||Range (%)||Average Recovery (%)|
|EDTA plasma (n=5)||97-108||102|
|Cell culture media (n=5)||88-99||94|
Samples were spiked with high concentrations of Human CTGF and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.
|Serum (n=5)||EDTA plasma (n=5)||Cell culture media (n=5)|
An unopened kit can be stored at 4℃ for 1 month. If the kit is not used within 1 month, store the items separately according to the following conditions once the kit is received.
|Micro ELISA Plate(Dismountable)||8 wells ×12 strips||-20℃, 6 months|
|Reference Standard||2 vials|
|Concentrated Biotinylated Detection Ab (100×)||1 vial, 120 μL|
|Concentrated HRP Conjugate (100×)||1 vial, 120 μL||-20℃(shading light), 6 months|
|Reference Standard & Sample Diluent||1 vial, 20 mL||4℃, 6 months|
|Biotinylated Detection Ab Diluent||1 vial, 14 mL|
|HRP Conjugate Diluent||1 vial, 14 mL|
|Concentrated Wash Buffer (25×)||1 vial, 30 mL|
|Substrate Reagent||1 vial, 10 mL||4℃(shading light)|
|Stop Solution||1 vial, 10 mL||4℃|
|Plate Sealer||5 pieces|
|Product Description||1 copy|
|Certificate of Analysis||1 copy|
Note: All reagent bottle caps must be tightened to prevent evaporation and microbial pollution.
The volume of reagents in partial shipments is a little more than the volume marked on the label, please use accurate measuring equipment instead of directly pouring into the vial(s).
1.Add 100 μL of standard or sample to each well.
2.Remove the liquid.
3.Add 100 μL Biotinylated Detection Ab. Incubate 1 hour at 37℃.Aspirate and wash 3 times.
4.Add 100 μL HRP Conjugate. Incubate 30 min at 37℃.Aspirate and wash 5 times.
5.Add 90 μL of Substrate Reagent. Incubate for 15 min at 37℃.
6.Add 50 μL of Stop Solution.
7.Read the OD at 450 nm immediately. Calculation of the results.