ELISA Research FAQs

In the sandwich enzyme-linked immunosorbent assay, a pair of matching antibodies (coating antibody and detection antibody) is required.

To detect the levels of CXCL10 or IP-10 in blood samples, it is recommended to use an enzyme-linked immunosorbent assay kit for testing. If you have accurate and simple experimental procedures, you can use the conventional ELISA kit. If you need to save costs, you can flexibly adjust the system of the kit and use the uncoated kit. The product number of our company's CXCL10/IP-10 ELISA kit is as follows: E-EL-M0021 Mouse IP-10/CXCL10(Interferon Gamma Induced Protein 10kDa) ELISA Kit E-EL-H0050 Human IP-10/CXCL10(Interferon Gamma Induced Protein 10kDa) ELISA Kit E-EL-R0546 Rat IP-10/CXCL10(Interferon Gamma Induced Protein 10kDa) ELISA Kit E-UNEL-M0109 Uncoated Mouse IP-10/CXCL10 (Interferon Gamma Induced Protein 10kDa) ELISA Kit E-UNEL-H0135 Uncoated Human IP-10/CXCL10(Interferon Gamma Induced Protein 10kDa) ELISA Kit

The most common method for detecting GM-CSF is the double-antibody sandwich ELISA. Flow cytometry and WB experiments can also be used to detect GM-CSF. Our company has corresponding products, and the item numbers are as follows: E-EL-H0081 Human GM-CSF(Granulocyte-Macrophage Colony Stimulating Factor) ELISA Kit E-EL-M0032 Mouse GM-CSF(Granulocyte-Macrophage Colony Stimulating Factor) ELISA Kit E-EL-R0008 Rat GM-CSF(Granulocyte-Macrophage Colony Stimulating Factor) ELISA Kit"

EGF is mainly used in cell biology research (such as cell proliferation experiments, scratch wound healing experiments), cancer research, regenerative medicine and tissue repair, and drug delivery system research. EGF is mainly detected using ELISA kits and WB experiments. Our company's EGF kits have been cited in numerous references and have received positive feedback from customers. It is a trustworthy brand for you. EGF - 53 Search Results Page - Elabscience® https://www.elabscience.com/search?keywords=EGF"

Immunohistochemistry (IHC) is the most commonly used method for detecting α-SMA, and it is widely applied in pathological diagnosis and basic research. The α-SMA antibodies of our company are as follows. Customers can make their choices according to their needs. α-SMA - 3 Search Results Page - Elabscience® https://www.elabscience.com/search?keywords=%CE%B1-SMA"

The product instructions and MSDS will be listed on our company's website. You can visit the website to check them.

1. Seal endogenous biotin. Before using biotinylated reagents, treat with an affinity lectin/biotin blocking kit, especially for tissues such as kidneys, liver, and spleen. 2. Optimize reagent concentration. Through pre-experiments (such as titration experiments), determine the optimal working concentrations of biotinylated antibodies and streptavidin-labeled probes to achieve the best signal-to-noise ratio. 3. Reduce non-specific binding. Dilute all reagents with a blocking buffer containing 1% BSA or 10% normal serum; set up a "no antibody" control to evaluate the background signal of the detection system. 4. Ensure biotin accessibility. When using biotinylated peptide segments, introduce flexible spacer arms (such as PEG, Ahx, or G-S) between the biotin and the peptide segment to avoid steric hindrance. 5. Titrate streptavidin conjugates. One streptavidin molecule can bind up to four biotin molecules, but excessive dosage is the main cause of high background, so titration must be performed. 6. Control experimental conditions. When performing cell surface labeling, biotinylate on ice to prevent reagent endocytosis; use compatible buffers (such as PBS, TBS, etc.).

The main differences between the direct method and the sandwich method in ELISA are as follows: 1. The quantity of antibodies is different. In the direct method ELISA, there is only one enzyme-labeled antibody, while in the sandwich method ELISA, there are two antibodies (the coating antibody + the detection antibody). 2. The antigen binding method is different. In the direct method ELISA, the antigen is directly coated on the solid-phase carrier, while in the sandwich method ELISA, the antigen is sandwiched between the two antibodies. 3. The specificity is different. The specificity of the direct method ELISA is lower (the enzyme-labeled primary antibody may bind to non-specific proteins), while the specificity of the sandwich method ELISA is higher (the two antibodies recognize the antigen, with strong specificity). 4. The sensitivity of the direct method ELISA is lower, while that of the sandwich method ELISA is higher. 5. The main applications are different. The direct method ELISA is used for screening a large number of monoclonal antibodies and detecting small molecule antigens (such as drugs, hormones, etc.). The sandwich method ELISA is used for detecting trace proteins, cytokines, etc. in complex samples.

Luminol is currently the most widely used HRP chemiluminescent substrate. When HRP and hydrogen peroxide are present, luminol is oxidized to generate the excited state of 3-aminophenylbenzoic acid, and when it returns to the ground state, it releases photons with a wavelength of 425 nm. By adding enhancers (such as phenolic compounds), the signal intensity can be enhanced by 1000 times, reaching sensitivity levels of picograms (pg) to attograms (ag).

Our company offers the Human BECN1 (Beclin 1) ELISA Kit (E-EL-H0564) and antibodies. Customers can make their selection based on the experimental requirements. The link is as follows: Beclin 1 - 8 Search Results Page - Elabscience® https://www.elabscience.com/search?keywords=Beclin%201"

Yes, commercial ELISA kits can accurately quantify VEGF165. Numerous studies have confirmed that the validated sandwich ELISA kits exhibit excellent specificity and sensitivity in serum, plasma, and cell culture supernatants. Our company's VEGF165 product is as follows: " E-EL-H2158 Human VEGF165(Vascular Endothelial Growth Factor 165) ELISA Kit E-MSEL-H0027 Mini Sample Human VEGF165 (Vascular Endothelial Growth Factor 165) ELISA Kit