Overview

  • Product name
    Rat IL-4 ELISA Kit 
    See all IL-4 kits
  • Detection method
    Colorimetric
  • Precision
    Intra-assay
    Sample n Mean SD CV%
    A 18 379.3pg/ml 13.5 2.5%
    B 19 532.5pg/ml 5.99 1.6%
    Inter-assay
    Sample n Mean SD CV%
    A 6 128.6pg/ml 7.6 5.9%
    B 6 532.2pg/ml 20.6 3.8%
  • Sample type
    Cell culture supernatant, Serum
  • Assay type
    Sandwich (quantitative)
  • Sensitivity
    < 15 pg/ml
  • Range
    31.25 pg/ml - 1000 pg/ml
  • Assay time
    4h 45m
  • Assay duration
    Multiple steps standard assay
  • Species reactivity
    Reacts with: Rat
  • Product overview

    Abcam’s IL-4 Rat in vitro ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of IL-4 in cell culture supernatants, buffered solutions and plasma.


    A monoclonal antibody specific for IL-4 has been coated onto the wells of the microtiter strips provided. Samples, including standards of known IL-4 concentRations, control specimens or unknowns are pipetted into these wells. During the first incubation, the standards or samples and a biotinylated monoclonal antibody specific for IL-4 are simultaneously incubated. After washing, the enzyme Streptavidin-HRP, that binds the biotinylated antibody is added, incubated and washed. A TMB substRate solution is added which acts on the bound enzyme to induce a colored reaction product. The intensity of this colored product is directly proportional to the concentRation of IL-4 present in the samples.


    This kit will recognize both endogenous and recombinant rat IL-4.

  • Tested applications
    Suitable for: Sandwich ELISAmore details
  • Platform
    Microplate

Properties

  • Storage instructions
    Store at +4°C. Please refer to protocols.
  • Components Identifier 1 x 96 tests 2 x 96 tests
    10X Standard Diluent Buffer Black 1 x 25ml 1 x 25ml
    200X Wash Buffer White 1 x 10ml 2 x 10ml
    Biotinylated Antibody Diluent Red 1 x 7.5ml 1 x 13ml
    Biotinylated anti-IL-4 Red 1 x 400µl 2 x 400µl
    Chromogen TMB Substrate Solution 1 x 11ml 1 x 24ml
    HRP Diluent Red 1 x 23ml 1 x 23ml
    IL-4 Microplate (12 x 8 well strips) 1 unit 2 units
    Rat IL-4 Standard (Lyophilized) Yellow 2 vials 4 vials
    Stop Reagent Black 1 x 11ml 2 x 11ml
    Streptavidin-HRP 2 x 5µl 4 x 5µl
  • Research areas
  • Relevance
    IL-4 is a pleiotropic cytokine produced by activated T cells. It is a ligand for interleukin 4 receptor. The interleukin 4 receptor also binds to IL13, which may contribute to many overlapping functions of this cytokine and IL13. STAT6, a signal transducer and activator of transcription, has been shown to play a central role in mediating the immune regulatory signal of IL-4. IL-4, IL3, IL5, IL13, and CSF2 form a cytokine gene cluster on chromosome 5q, with this gene particularly close to IL13. IL-4, IL13 and IL5 are found to be regulated coordinately by several long-range regulatory elements in an over 120 kilobase range on the chromosome. Two alternatively spliced transcript variants of IL-4 encoding distinct isoforms have been reported.
  • Cellular localization
    Secreted
  • Alternative names
    • B cell growth factor 1
    • B cell stimulatory factor 1
    • BCGF 1
    • BCGF1
    • Binetrakin
    • BSF 1
    • BSF1
    • IL 4
    • IL4
    • Interleukin 4
    • Lymphocyte stimulatory factor 1
    • MGC79402
    • Pitrakinra
    see all
  • Database links

Applications

Our Abpromise guarantee covers the use of ab46073 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Sandwich ELISA Use at an assay dependent concentration.

Images

  •  

    Representative Standard Curve using ab46073

Protocols

References

ab46073 has not yet been referenced specifically in any publications.

Customer reviews and Q&As

Answer


I have the following information for you regarding the kits we discussed:


ab46073:
We have no data regarding normal values observed with IL-6 and IL-4 in rat but as free circulating cytokines are rather dangerous for living animal, the normal level is probably below the detection level.


ab119548:
Unfortunately, we have not tested the rat IL-6 ELISA on normal level in rat samples. We have only tested this ELISA using samples spiked with recombinant protein.


ab100770 and ab100772:
1) What is the normal amount of rat IL4 in serum?
We tested the normal amount of IL-4 in healthy rat serum/plasma samples to be undetectable – 2 pg/ml.

2) What is the normal amount of rat IL6 in serum?
We tested the normal amount of IL-6 in healthy rat serum/plasma samples to be below the detectable limits of this ELISA. Thus, this kit may be more suitable for diseased/treated samples; however, there are some attached tips for increasing sensitivity the customer may use - see below.

3) What is the recommended dilution range for rat serum for IL4 and IL6?
We recommend a 2-fold dilution for serum/plasma samples for use with our IL-4 and IL-6 Rat ELISA kits.


Some advice for what to do if samples are reading below detection limit and how the sensitivity of the kit can be increased:


Incubate sample overnight at 4 degrees C
Increase amount of biotinylated ab (by 1.5 fold or so – too much may increase background)
Incubate biotinylated ab overnight at 4 degrees C
Increase amount of HRP-strep (by about 1.5 fold or so – too much may increase background)
Concentrate sample (using a spin column)



Please note: it’s best to try just one of these modifications at a time. Implementing too many of these changes at once may cause high background.

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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"

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