Quantikine High Sensitivity ELISA Kits

High sensitivity cytokine measurement is often critical for evaluating CAR-T cell activation and supporting studies of CAR-T cell persistence and safety. Quantikine High Sensitivity ELISA Kits can be used to quantify cytokines associated with therapeutic activity and cytokine release syndrome (CRS), helping researchers characterize cellular responses and monitor treatment-related immune effects.

Monitoring immune responses often requires measuring cytokines and other biomarkers present at concentrations below the reliable detection limits of standard ELISAs. Quantikine High Sensitivity ELISA Kits enable accurate quantification of low-level immune mediators, supporting studies that track immune responses over time and the detection of early changes associated with immune activation, immune regulation, inflammation, infection, vaccination, or therapeutic intervention.

Many autoimmune and inflammatory disorders are driven by dysregulated cytokine signaling and chronic immune activation. Quantikine High Sensitivity ELISA Kits support studies of inflammatory pathways and immune regulation by enabling the sensitive measurement of protein biomarkers associated with disease onset, progression, flare activity, and response to treatment.

Vaccine-induced immune responses are often accompanied by subtle changes in cytokine and immune biomarker expression that may be difficult to detect using conventional ELISAs. Quantikine High Sensitivity ELISA Kits enable reliable quantification of low-abundance immune mediators, supporting studies of vaccine immunogenicity, immune activation, response kinetics, and biomarker evaluation throughout vaccine development and clinical research.

Successful biomarker development requires reproducible quantification of candidate biomarkers across diverse patient cohorts, study populations, and longitudinal time points. Quantikine High Sensitivity ELISA Kits provide the sensitivity and consistency needed to support biomarker validation and translational research studies, enabling the confirmation of disease-associated proteins, evaluation of their relationship to disease state and progression, and assessment of pharmacodynamic responses to therapeutic intervention.

A Quantikine High Sensitivity ELISA (enzyme-linked immunosorbent assay) is an ultra-sensitive quantitative sandwich immunoassay developed by R&D Systems for the measurement of very low concentrations of specific protein biomarkers. Like a standard Quantikine ELISA, the assay uses analyte-specific capture and detection antibodies to generate a measurable signal proportional to the amount of target protein present. However, Quantikine High Sensitivity ELISA Kits incorporate signal amplification technologies that allow many of our assays to detect analytes at femtogram-per-milliliter concentrations, making them ideal for measuring low-abundance cytokines, chemokines, growth factors, and other biomarkers that may be difficult to detect with conventional ELISAs.

R&D Systems antibodies and recombinant proteins are at the core of every Quantikine High Sensitivity ELISA Kit. Manufactured and tested in-house for consistent quality and performance, these critical assay components help ensure accurate and reliable protein quantification across a range of research applications.

Quantikine High Sensitivity ELISA Kits use a sandwich immunoassay format in which a capture antibody immobilized on a microtiter plate binds to the target analyte. A second analyte-specific detection antibody forms an antibody-analyte-antibody complex. Depending on the assay, signal amplification is achieved using either an alkaline phosphatase-based amplification system or a polymeric streptavidin-HRP amplification system, enabling reliable detection of proteins present at extremely low concentrations.

Quantikine High Sensitivity ELISA Kits quantify protein concentrations by comparing the absorbance values of unknown samples to a standard curve generated using known concentrations of the target analyte. The concentration of the analyte in each sample is then determined by interpolation from the standard curve within the assay's validated range.

Quantikine High Sensitivity ELISA Kits are available for the measurement of cytokines, chemokines, growth factors, immune checkpoint proteins, inflammatory mediators, and other biomarkers that may occur at low concentrations and require highly sensitive detection. Available targets include human IFN-α2, IFN-γ, TNF-α, IL-1β, IL-2, IL-4, IL-6, IL-7, IL-8/CXCL8, IL-10, IL-12 p70, IL-17, GM-CSF, G-CSF, CTLA-4, Granzyme B, PlGF, and FGF basic and mouse IL-1β, IL-17, and TNF-α.

Quantikine High Sensitivity ELISA Kits are designed to quantify low-abundance proteins in a variety of biological samples. Depending on the assay, validated sample types may include serum, plasma, cell culture supernatants, and other sample matrices. Researchers should consult the product-specific datasheet for validated sample types and sample preparation recommendations.

Quantikine High Sensitivity ELISA Kits combine ultra-low level protein detection with the convenience of a complete, ready-to-use assay format. Each assay undergoes rigorous validation and quality testing to characterize sensitivity, specificity, reproducibility, and lot-to-lot consistency, helping ensure accurate quantitative protein measurement. Comprehensive performance specifications and protocol documentation are provided, making these kits an ideal choice for researchers studying low-abundance biomarkers that may be difficult to detect using conventional ELISAs.

Quantikine High Sensitivity ELISA Kits are designed to detect proteins at extremely low concentrations, with many assays capable of femtogram-per-milliliter sensitivity. The exact sensitivity, detection limit, and assay range vary by target and are reported in the product-specific datasheet.

Both Quantikine ELISAs and Quantikine High Sensitivity ELISAs use a sandwich ELISA format and are supplied as complete, ready-to-use kits for quantitative protein measurement. Quantikine High Sensitivity ELISAs incorporate specialized signal amplification strategies that enable detection of substantially lower analyte concentrations, often at femtogram-per-milliliter levels, making them ideal for measuring low-abundance proteins and biomarkers that may be difficult to detect with conventional ELISAs.