ELISA Research FAQs

The effect is generally small.

Agreed. If the sample to be tested cannot be tested in time, please pack the sample after preparation and freeze it at -20℃ (within 3 months) or -80℃ (within 1 month) for testing as soon as possible, and pay attention to avoid repeated freezing and thawing.

No relevant data is available for the time being. It is suggested that teachers do more concentration gradient tests during testing to ensure that the detected value falls within the range of the standard curve.

IL-1β precursor is an inactive form (31 kDa) that is enzymatically cleaved to a mature, active secreted form of IL-1β (17 kDa). E-EL-M0037 detects mature IL-1β.

This kit is designed for the original strain of the new crown virus, and the omicron variant has not been verified. However, we have verified 26 recombinant variants of the SARS-CoV-2 spike protein through the kit. For more information, customers can refer to the kit instructions (https://file.elabscience.com/Manual/covid_19/E-EL-E605 .pdf).

ELISA testing is characterized by high sensitivity, strong specificity, simple operation, small sample volume, and high-throughput detection. It also offers high accuracy and good repeatability in its results, making it widely used in clinical and research settings. When choosing a high-quality ELISA kit, the following points should be considered: 1. Research purpose and ELISA type. Determine whether the ELISA kit is for research, clinical diagnosis, or other applications. Select the appropriate ELISA kit type based on your specific experimental needs and target characteristics. 2. Sample type and sample volume. Ensure that the kit can detect your sample type and that the required sample volume is suitable for the available sample volume, as some kits may require a larger volume for accurate measurement. 3. Pay attention to the performance parameters of the kit (sensitivity, specificity, precision, stability, recovery rate), and choose a high-quality ELISA kit. 5. Convenience of experimental operation. Under the condition of ensuring quality, the shorter the operation time and the more convenient the operation of the kit, the better.

Relevant information can be found on the NCBI website or the official websites of major biological reagent suppliers. For example: https://www.ncbi.nlm.nih.gov/books/NBK604953/ https://www.ncbi.nlm.nih.gov/books/NBK92434/ https://cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10338 Enzyme-Linked Immunosorbent Assay (ELISA) Protocol - ELISA Detection Experiment - Thermo Fisher Scientific - CN https://www.thermofisher.cn/cn/zh/home/references/protocols/cell-and-tissue-analysis/elisa-protocol/general-elisa-protocol.html Help & FAQs: ELISA Kits | R&D Systems https://www.rndsystems.com/resources/faqs/elisa-kits?_gl=1*1vy1adv*_up*MQ.. *_ga*NjE4MTgxMDM0LjE3NzUwMjQ2NDc.*_ga_11111111*czE3NzUwMjQ2NDYkbzEkZzAkdDE3NzUwMjQ3MDIkajQkbDAkaDE4MDQwMzM4ODU."

In addition to the UniProt, GeneCards, and OMIM databases, you can also search for relevant literature in NCBI/PubMed/PMC to understand the role of HGF in cancer and genetics.

If you want to know the basic information and functions of HIF-1α: You can quickly get an overview of the gene by referring to GeneCards or NCBI Gene database. For in-depth functional research, you can consult the UniProt database. Our company has HIF-1α ELISA kits, with the following product numbers: E-EL-H6066 Human HIF-1α (Hypoxia Inducible Factor 1 Alpha) ELISA Kit E-EL-M0687 Mouse HIF-1α (Hypoxia Inducible Factor 1 Alpha) ELISA Kit E-EL-R0513 Rat HIF-1α (Hypoxia Inducible Factor 1 Alpha) ELISA Kit https://www.elabscience.cn/search-keywords=HIF-1%CE%B1"

The differences between sandwich method and indirect method in enzyme-linked immunosorbent assay (ELISA) are as follows: Taking the double antibody sandwich method as an example: 1. The detection principle is different. The principle of the sandwich method is that the target antigen is "sandwiched" between two specific antibodies. The principle of the indirect method is that the antigen is directly coated, and the antigen binds to the primary antibody, and then the labeled secondary antibody binds to the primary antibody for detection and signal amplification. 2. The antigen requirements are different. The ELISA of the sandwich method requires the antigen to have at least two different epitopes (such as proteins, peptides), while in the ELISA of the indirect method, almost all antigens are applicable, including small molecules, peptides, as long as they can be adsorbed on the plate bottom. 3. The sensitivity and specificity are different. The sensitivity and specificity of the ELISA of the sandwich method are higher. The ELISA of the indirect method is prone to non-specific binding (interference from other IgG in the serum). 4. The operation steps are different. Due to the different principles, the operation steps of the ELISA of the sandwich method are more. 5. The application scenarios are different. The ELISA of the sandwich method is mainly used for the determination of antigens, while the ELISA of the indirect method is used for the determination of antibodies (such as for serological diagnosis, immune response assessment, etc.). 6. The sample types are different. The ELISA of the sandwich method can detect more complex sample matrices, such as serum, plasma, tissues, and cells. The ELISA of the indirect method is suitable for relatively pure samples with a high background of complex matrices. 7. The cost is different. The cost of the ELISA of the sandwich method is higher. The ELISA of the sandwich method is the most sensitive and specific among all ELISA principles, and is suitable for the detection of antigens in complex samples; while the ELISA of the indirect method, due to its simple operation and economy, remains the mainstream choice for antibody detection and epidemiological screening.

For the detection of MCP-1/CCL2 levels in blood samples, the enzyme-linked immunosorbent assay (ELISA) kit is currently the most mature, widely used and cost-effective method. Our company's MCP-1/CCL2 kit is as follows: E-EL-M3001 Mouse MCP-1(Monocyte Chemotactic Protein 1) ELISA Kit E-EL-H6005 Human MCP-1(Monocyte Chemotactic Protein 1) ELISA Kit E-EL-R0633 Rat MCP-1(Monocyte Chemotactic Protein 1) ELISA Kit E-MSEL-M0012 Mini Sample Mouse MCP-1 (Monocyte Chemotactic Protein 1) ELISA Kit E-MSEL-H0013 Mini Sample Human MCP-1 ( Monocyte Chemotactic Protein 1 ) ELISA Kit E-UNEL-M0077 Uncoated Mouse MCP-1(Monocyte Chemotactic Protein 1) ELISA Kit E-UNEL-H0112 Uncoated Human MCP-1(Monocyte Chemotactic Protein 1) ELISA Kit