• Product name
    Human IFN gamma ELISA Kit
    See all Interferon gamma kits
  • Detection method
  • Precision
    Sample n Mean SD CV%
    Overall 5 1.1%
    Sample n Mean SD CV%
    Overall 3 7.9%
  • Sample type
    Cell culture supernatant, Serum, Plasma
  • Assay type
    Sandwich (quantitative)
  • Sensitivity
    470 pg/ml
  • Range
    0.468 ng/ml - 30 ng/ml
  • Recovery

    Sample specific recovery
    Sample type Average % Range
    Serum 102 98% - 104%
    Cell culture media 86 77% - 93%
    Heparin Plasma 244 197% - 298%
    EDTA Plasma 122 117% - 124%
    Citrate Plasma 107 96% - 115%

  • Assay time
    1h 30m
  • Assay duration
    One step assay
  • Species reactivity
    Reacts with: Human
  • Product overview

    Abcam’s IFN gamma in vitro SimpleStep ELISA® (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of IFN-gamma protein in human cell culture supernatant, plasma and serum samples.

    The 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. TMB substrate is added and during incubation is catalyzed by HRP, generating blue coloration. This reaction is then stopped by addition of Stop Solution completing any color change from blue to yellow. Signal is generated proportionally to the amount of bound analyte and the intensity is measured at 450 nm. Optionally, instead of the endpoint reading, development of TMB can be recorded kinetically at 600 nm.

  • Notes

    IFN gamma (IFNG) is produced by lymphocytes activated by specific antigens or mitogens. IFN gamma, in addition to having antiviral activity, has important immunoregulatory functions. It is a potent activator of macrophages, it has antiproliferative effects on transformed cells and it can potentiate the antiviral and antitumor effects of the type I interferons.

  • Tested applications
    Suitable for: Sandwich ELISAmore details
  • Platform



Our Abpromise guarantee covers the use of ab174443 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.


  • ELISA Protocol Summary
  • Background-subtracted data values (mean +/- SD) are graphed.
  • Background-subtracted data values (mean +/- SD) are graphed.
  • PBMC were grown in the absence or presence of phytohemagglutinin (PHA) for 2 days. IFNG concentrations were measured in 12X and 6X diluted cell culture supernatants of the unstimulated PBMC and the stimulated PBMC, and media. Raw data values (mean +/-SD, n=3) are graphed. The dotted line represents zero sample background.
  • The concentrations of IFNG were interpolated from data values shown in Figure 3 using IFNG standard curve and corrected for sample dilution. The mean IFNG concentration was determined to be 1.8 ng/mL in unstimulated PBMC supernatants and 177.2 ng/mL in stimulated PBMC supernatants.



This product has been referenced in:
  • Yamamoto M  et al. Stage classification of IgG4-related dacryoadenitis and sialadenitis by the serum cytokine environment. Mod Rheumatol N/A:1-5 (2018). Read more (PubMed: 29385874) »
  • Costantini A  et al. Predictive role of plasmatic biomarkers in advanced non-small cell lung cancer treated by nivolumab. Oncoimmunology 7:e1452581 (2018). Read more (PubMed: 30221046) »
See all 2 Publications for this product

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