Human IL-1ra ELISA Kit, Fluorescent (ab229435)
Key features and details
- One-wash 90 minute protocol
- Sensitivity: 1.4 pg/ml
- Range: 3.9 pg/ml - 2000 pg/ml
- Sample type: Cell culture supernatant, Cit plasma, EDTA Plasma, Hep Plasma, Milk, Saliva, Serum, Urine
- Detection method: Fluorescent
- Assay type: Sandwich (quantitative)
- Reacts with: Human
Overview
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Product name
Human IL-1ra ELISA Kit, Fluorescent
See all IL-1RA kits -
Detection method
Fluorescent -
Precision
Intra-assay Sample n Mean SD CV% plasma 5 3.5% Inter-assay Sample n Mean SD CV% plasma 3 4.3% -
Sample type
Cell culture supernatant, Saliva, Milk, Urine, Serum, Hep Plasma, EDTA Plasma, Cit plasma -
Assay type
Sandwich (quantitative) -
Sensitivity
1.4 pg/ml -
Range
3.9 pg/ml - 2000 pg/ml -
Recovery
Sample specific recovery Sample type Average % Range Saliva 102 96% - 112% Milk 104 98% - 110% Urine 102 100% - 106% Serum 106 82% - 119% Plasma 103 93% - 117% Cell culture media 98 97% - 99% EDTA Plasma 105 100% - 113% Cit plasma 94 80% - 102% -
Assay time
1h 30m -
Assay duration
One step assay -
Species reactivity
Reacts with: Human -
Product overview
IL-1Ra in vitro CatchPoint SimpleStep ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of IL-1Ra protein in human serum, plasma, cell culture supernatants, milk, saliva, and urine.
This CatchPoint SimpleStep ELISA kit has been optimized for Molecular Devices Microplate Readers. Click here for a list of recommended Microplate Readers.
If using a Molecular Devices’ plate reader supported by SoftMax® Pro software, a preconfigured protocol for these CatchPoint SimpleStep ELISA Kits is available with all the protocol and analysis settings at www.softmaxpro.org.The CatchPoint SimpleStep ELISA employs an affinity tag labeled capture antibody and a reporter conjugated detector antibody which immunocapture the sample analyte in solution. This entire complex (capture antibody/analyte/detector antibody) is in turn immobilized via immunoaffinity of an anti-tag antibody coating the well. To perform the assay, samples or standards are added to the wells, followed by the antibody mix. After incubation, the wells are washed to remove unbound material. CatchPoint HRP Development Solution containing the Stoplight Red Substrate is added. During incubation, the substrate is catalyzed by HRP generating a fluorescent product. Signal is generated proportionally to the amount of bound analyte and the intensity is measured in a fluorescence plater reader at 530/570/590 nm Excitation/Cutoff/Emission.
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Notes
Interleukin-1 receptor antagonist (IL-1ra, also known as IL-1F3) is a member of the IL-1 cytokine family. IL-1ra inhibits the activity of interleukin-1 by binding to receptor IL1R1 and preventing its association with the coreceptor IL1RAP for signaling. However, IL-1ra has no interleukin-1 like activity. It binds functional interleukin-1 receptor IL1R1 with greater affinity than decoy receptor IL1R2; however, the physiological relevance of the latter association is unsure.
Abcam has not and does not intend to apply for the REACH Authorisation of customers’ uses of products that contain European Authorisation list (Annex XIV) substances.
It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses. -
Platform
Pre-coated microplate (12 x 8 well strips)
Properties
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Storage instructions
Store at +4°C. Please refer to protocols. -
Components 1 x 96 tests 100X Stoplight Red Substrate 1 x 120µl 10X Human IL-1Ra Capture Antibody 1 x 600µl 10X Human IL-1Ra Detector Antibody 1 x 600µl 10X Wash Buffer PT (ab206977) 1 x 20ml 500X Hydrogen Peroxide (H2O2, 3%) 1 x 50µl 50X Cell Extraction Enhancer Solution (ab193971) 1 x 1ml 5X Cell Extraction Buffer PTR (ab193970) 1 x 10ml Antibody Diluent 4BI 1 x 6ml Human IL-1Ra Lyophilized Recombinant Protein 2 vials Plate Seals 1 unit Sample Diluent NS (ab193972) 1 x 50ml SimpleStep Pre-Coated Black 96-Well Microplate 1 unit Stoplight Red Substrate Buffer 1 x 12ml -
Research areas
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Function
Inhibits the activity of interleukin-1 by binding to receptor IL1R1 and preventing its association with the coreceptor IL1RAP for signaling. Has no interleukin-1 like activity. Binds functional interleukin-1 receptor IL1R1 with greater affinity than decoy receptor IL1R2; however, the physiological relevance of the latter association is unsure. -
Tissue specificity
The intracellular form of IL1RN is predominantly expressed in epithelial cells. -
Involvement in disease
Microvascular complications of diabetes 4
Interleukin 1 receptor antagonist deficiency -
Cellular localization
Cytoplasm and Secreted. - Information by UniProt
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Alternative names
- DIRA
- F630041P17Rik
- ICIL 1RA
see all -
Database links
- Entrez Gene: 3557 Human
- Omim: 147679 Human
- SwissProt: P18510 Human
- Unigene: 81134 Human
Images
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Other - Human IL-1ra ELISA Kit, Fluorescent (ab229435)
SimpleStep ELISA technology allows the formation of the antibody-antigen complex in one single step, reducing assay time to 90 minutes. Add samples or standards and antibody mix to wells all at once, incubate, wash, and add your final substrate. See protocol for a detailed step-by-step guide.
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Example of human IL-1Ra standard curve in Sample Diluent NSThe IL-1Ra standard curve was prepared as described in Section 10.
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Interpolated concentrations of native IL-1Ra in human serum and plasma samplesThe concentrations of IL-1Ra were measured in duplicates, interpolated from the IL-1Ra standard curves and corrected for sample dilution. Undiluted samples are as follows: serum 100%, plasma (EDTA) 100%, plasma (heparin) 100%; and plasma (citrate) 100%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean IL-1Ra concentration was determined to be 276 pg/mL in serum, 239 pg/mL in plasma (EDTA) and 233 pg/mL in plasma (heparin) and 170 pg/mL in plasma (citrate).
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Serum from ten individual healthy human female donors was measured in duplicateInterpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean IL-1Ra concentration was determined to be 277 pg/mL with a range of 130 – 598 pg/mL.
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Interpolated concentrations of native IL-1Ra in human saliva, milk and urine samplesThe concentrations of IL-1Ra were measured in duplicates, interpolated from the IL-1Ra standard curves and corrected for sample dilution. Undiluted samples are as follows: saliva 1%, milk 15%, and urine 15%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean IL-1Ra concentration was determined to be 207 ng/mL in saliva, 1,121 pg/mL in milk and 4,271 pg/mL in urine.
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Interpolated concentrations of native IL-1Ra in unstimulated and PHA/PMA stimulated human Peripherial Blood Monocyte (PBMC) Cell samplesThe concentrations of IL-1Ra were measured in duplicates, interpolated from the IL-1Ra standard curves and corrected for sample dilution. Undiluted samples are as follows: unstimulated 2% and stimulated 2%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean IL-1Ra concentration was determined to be 3360 pg/mL in unstimulated, 11,912 pg/mL in stimulated and undetectable in media.
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Sandwich ELISA - Human IL-1ra ELISA Kit, Fluorescent (ab229435)To learn more about the advantages of recombinant antibodies see here.
