Sheep Free thyroxine (FT4) ELISA Kit

Product Information

  • Product name

    Sheep Free thyroxine (FT4) ELISA Kit

  • Reactivity

    Sheep

  • Applications

    ELISA

  • Application notes

    This Sheep Free thyroxine (FT4) ELISA Kit employs a two-site sandwich ELISA to quantitate FT4 in samples. An antibody specific for FT4 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anyFT4 present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for FT4 is added to the wells. After washing, Streptavidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of FT4 bound in the initial step. The color development is stopped and the intensity of the color is measured.

  • Detection method

    Colorimetric

  • Sample type

    Cell culture supernatants, Other biological fluids, Plasma, Serum

  • Assay type

    Sandwich ELISA (quantitative)

  • Assay duration

    Multiple steps standard sandwich ELISA assay with a working time of 3-5 hours. It depends on the experience of the operation person.

Fig.1. Sheep Free thyroxine (FT4) Standard Curve.

Fig.2. Abbkine ELISA kit is series of sandwich ELISA to quantitate specific protein in samples.

Product Properties

  • Kit components

    • Sheep Free thyroxine microplate
    • Sheep Free thyroxine standard
    • Sheep Free thyroxine detect antibody
    • Streptavidin-HRP
    • Standard diluent
    • Assay buffer
    • HRP substrate
    • Stop solution
    • Wash buffer
    • Plate covers

  • Features & Benefits

    Sheep Free thyroxine (FT4) ELISA Kit has high sensitivity and excellent specificity for detection of Sheep FT4. No significant cross-reactivity or interference between Sheep FT4 and analogues was observed.

  • Calibration range

    1.11-90 pg/mL

  • Limit of detection

    0.48 pg/mL

  • Usage notes

    • Do not mix components from different kit lots or use reagents beyond the kit expiration date.
    • Allow all reagents to warm to room temperature for at least 30 minutes before opening.
    • Pre-rinse the pipet tip with reagent, use fresh pipet tips for each sample, standard and reagent to avoid contamination.
    • Unused wells must be kept desiccated at 4 °C in the sealed bag provided.
    • Mix Thoroughly is very important for the result. It is recommended using low frequency oscillator or slight hand shaking every 10 minutes.
    • It is recommended that all samples and standards be assayed in duplicate or triplicate.

  • Storage instructions

    The unopened kit should be stored at 2 - 8°C. After opening, please store refer to protocols.

  • Shipping

    Gel pack with blue ice.

  • Precautions

    The product listed herein is for research use only and is not intended for use in human or clinical diagnosis. Suggested applications of our products are not recommendations to use our products in violation of any patent or as a license. We cannot be responsible for patent infringements or other violations that may occur with the use of this product.

Additional Information

  • Background

    Hyroxine(T4), a form of thyroid hormones is the major hormone secreted by the follicular cells of the thyroid gland. Over 99% of thyroxine (T4) circulates in blood is bound to thyroxine-binding globulin (TBG). However, only the free (unbound) portion of Thyroxine is responsible for the biological action. Further, the concentrations of the carrier proteins are altered in many clinical conditions, such as pregnancy. In normal thyroid function as the concentrations of the carrier proteins alters, the total T4 level changes so that the free T4 concentration remains constant. Thus, measurements of free T4 concentrations correlate more reliably with clinical status than total T4 levels. Free thyroxine (T4) can be measured directly (FT4) or calculated as the free thyroxine index (FTI). The FTI tells how much free T4 is present compared to bound T4. The FTI can help tell if abnormal amounts of T4 are present because of abnormal amounts of thyroxine-binding globulin.

  • Alternative names

    FT4; FTI

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Sheep Free thyroxine (FT4) ELISA Kit
Click to download booklet for more details

Here we provide some standard research protocols for bioscience including molecular biology, cell biology, immunology, plant biology, genetics, etc. To our knowledge, customized protocols are not required for most products. So please try the standard protocols listed below and let us know how you get on.

Preparation methods for Biochemical

Biochemical reagents have been widely used in life science fundamental research as buffer, probes, substrates, intermediates and standards, etc. You may optimize or choose proper protocols for your specific assay. However, some of tips and suggestions listed below may be for your reference.

  1. ♦ What and how to make a "good" buffer?

Antibody application protocols

Antibodies are useful not only to detect specific biomolecules but also to measure changes in their level and specificity of modification by processes such as phosphorylation, methylation, or glycosylation. Here show some protocols and troubleshooting tips on how to get the best from our antibodies.

  1. ♦ Antibody Western Blotting (WB) protocol
  2. ♦ Antibody Immunohistochemistry (IHC) protocol
  3. ♦ Antibody Immunofluorescence (IF) protocol
  4. ♦ Antibody Immunoprecipitation (IP) protocol
  5. ♦ Antibody Enzyme-Linked ImmunoSorbent Assay (ELISA) protocol

Protein&peptide usage suggestions

Synthetic peptides, native or recombinant proteins can be used for medical, academic and research purposes, such as gene therapy, drug screening, antibody production, cell function analysis. Here, we provide some of tips and suggestions for your reference.

  1. ♦ Handling and storage suggestion for peptides and protein
  2. ♦ Cytokines and growth factors for cell culture application

Commonly used assay kits guidelines

Assay kits that are simple and convenient to use, which are superior in performance and require little to no time for assay optimization. Further details of specific products which are needed for individual protocols are given in the protocols themselves in booklet.

We hope this will be helpful for your research work. Please let us know through support@abbkine.com if you need more information or support.

Cat #: KTE110073

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  •  Fax: +86-27-59716788
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