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ELISA Kit for Thyroxine (T4)

CAT: 0338-TRV-046872-01Size: 24 TestsDry Ice: NoHazardous: No
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CAT#:0338-TRV-046872-01Size:24 Tests
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24/48H Stock Items & 2 to 6 Weeks non Stock Items.
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CAS Number
7732-18-5
Product Name Alternative
3,5,3',5'-Tetraiodothyronine; L-Thyroxine; Levothyroxine
Applications
Enzyme-linked immunosorbent assay for Antigen Detection.
Field of Research
Endocrinology; Hormone metabolism
Assay Principle
This assay employs the competitive inhibition enzyme immunoassay technique. A monoclonal antibody specific to Thyroxine (T4) has been pre-coated onto a microplate. A competitive inhibition reaction is launched between biotin labeled Thyroxine (T4) and unlabeled Thyroxine (T4) (Standards or samples) with the pre-coated antibody specific to Thyroxine (T4) . After incubation the unbound conjugate is washed off. Next, avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. The amount of bound HRP conjugate is reverse proportional to the concentration of Thyroxine (T4) in the sample. After addition of the substrate solution, the intensity of color developed is reverse proportional to the concentration of Thyroxine (T4) in the sample.
Assay Protocol
1. Prepare all reagents, samples and standards;
2. Add 50µ L standard or sample to each well.
        And then add 50µ L prepared Detection Reagent A immediately.
        Shake and mix. Incubate 1 hour at 37° C;
3. Aspirate and wash 3 times;
4. Add 100µ L prepared Detection Reagent B. Incubate 30 minutes at 37° C;
5. Aspirate and wash 5 times;
6. Add 90µ L Substrate Solution. Incubate 10-20 minutes at 37° C;
7. Add 50µ L Stop Solution. Read at 450 nm immediately.
Assay Performance Time
2h
Sample Type
Serum, plasma and other biological fluids
Detection Range
3.70-300ng/mL
Precision
Intra-assay Precision (Precision within an assay) : 3 samples with low, middle and high level Thyroxine (T4) were tested 20 times on one plate, respectively. Inter-assay Precision (Precision between assays) : 3 samples with low, middle and high level Thyroxine (T4) were tested on 3 different plates, 8 replicates in each plate. CV (%) = SD/meanX100 Intra-Assay: CV Inter-Assay: CV Inter-Assay: CV
Sensitivity
The minimum detectable dose of this kit is typically less than 1.29ng/mL
Stability
The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition. To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.
Format
48T, 96T, 96Tx5, 96Tx10, 96Tx100
Specificity
This assay has high sensitivity and excellent specificity for detection of Thyroxine (T4) . No significant cross-reactivity or interference between Thyroxine (T4) and analogues was observed.
Product Name Synonym
Thyroxine
Method
Competitive Inhibition
Organism Species
Pan-species (General)

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