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Rat ET-1(Endothelin 1) ELISA Kit

  • Cat.No.:E-EL-R1458

  • Reactivity: Rat

To Purchase E-EL-R1458

  • 96T
  • 48T
  • 24T
  • 96T*5
  • 96T*10
Price: $495

Product Details


Assay type Sandwich-ELISA
Format 96T/48T
Assay time 3.5h
Detection range 0.78-50 pg/mL
Sensitivity 0.47 pg/mL
Sample type &Sample volume serum, plasma and other biological fluids; 100μL
Specificity This kit recognizes Rat ET-1 in samples. No significant cross-reactivity or interference between Rat ET-1 and analogues was observed.
Reproducibility Both intra-CV and inter-CV are < 10%.
Application This ELISA kit applies to the in vitro quantitative determination of Rat ET-1 concentrations in serum, plasma and other biological fluids.

Test Principle

This ELISA kit uses the Sandwich-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Rat ET-1. Standards or samples are added to the micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Rat ET-1 and Avidin-Horseradish Peroxidase (HRP) conjugate are added successively to each micro plate well and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Rat ET-1, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Rat ET-1. You can calculate the concentration of Rat ET-1 in the samples by comparing the OD of the samples to the standard curve.

Kit components & Storage

An unopened kit can be stored at 2-8℃ for 1 month. If the kit is not supposed to be used within 1 month, store the components separately according to the following conditions once the kit is received.
Micro ELISA Plate(Dismountable) 96T: 8 wells ×12 strips
48T: 8 wells ×6 strips
-20℃, 6 months
Reference Standard 96T: 2 vials
48T: 1 vial
Concentrated Biotinylated Detection Ab (100×) 96T: 1 vial, 120 μL
48T: 1 vial, 60 μL
Concentrated HRP Conjugate (100×) 96T: 1 vial, 120 μL
48T: 1 vial, 60 μL
-20℃(Protect from light), 6 months
Reference Standard & Sample Diluent 1 vial, 20 mL 2-8°C, 6 months
Biotinylated Detection Ab Diluent 1 vial, 14 mL
HRP Conjugate Diluent 1 vial, 14 mL
Concentrated Wash Buffer (25×) 1 vial, 30 mL
Substrate Reagent 1 vial, 10 mL 2-8℃(Protect from light)
Stop Solution 1 vial, 10 mL 2-8°C
Plate Sealer 5 pieces
Manual 1 copy
Certificate of Analysis 1 copy

Technical Data


Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Rat ET-1 were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Rat ET-1 were tested on 3 different plates, 20 replicates in each plate.

  Intra-assay Precision Inter-assay Precision
Sample 1 2 3 1 2 3
n 20 20 20 20 20 20
Mean (pg/mL) 2.14 5.93 24.08 2.31 5.77 23.01
Standard deviation 0.11 0.27 1.08 0.14 0.29 1.14
CV (%) 5.14 4.55 4.49 6.06 5.03 4.95


The recovery of Rat ET-1 spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.

Sample Type Range (%) Average Recovery (%)
Serum(n=8) 93-105 101
EDTA plasma (n=8) 97-104 101
Cell culture media (n=8) 97-109 103


Samples were spiked with high concentrations of Rat ET-1 and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.

Target Information

SynonymsEDN1, ET1, HDLCQ7, PPET1, Preproendothelin-1

Assay Procedures

elisa assay procedure 1

1. Add 100μL standard or sample to the wells. Incubate for 90 min at 37°C

elisa assay procedure 2

2. Discard the liquid, immediately add 100μL Biotinylated Detection Ab working solution to each well. Incubate for 60 min at 37°C

elisa assay procedure 3

3. Aspirate and wash the plate for 3 times

elisa assay procedure 4

4. Add 100μL HRP conjugate working solution. Incubate for 30 min at 37°C. Aspirate and wash the plate for 5 times

elisa assay procedure 5

5. Add 90μL Substrate Reagent. Incubate for 15 min at 37°C

elisa assay procedure 6

6. Add 50μL Stop Solution

elisa assay procedure 7

7. Read the plate at 450nm immediately. Calculation of the results


From now on, if you have published a paper by using any of our products since 1/1/2019, fill out the “Elabscience Publication Reward Application Form”carefully and send it to, we will get back to you with the reward after we confirm it ASAP!

View more details about our Publication Reward >>

  1. European Respiratory Journal (2018) IF: 12.242
    Macitentan reduces progression of TGF-β1-induced pulmonary fibrosis and pulmonary hypertension.

    DOI: 10.1183/13993003.01857-2017

    PMID: 29976656

    Sample: Serum
  2. Scientific Reports (2016) IF: 4.259
    Endothelial Dysfunction Correlates With Decompression Bubbles In Rats.

    DOI: 10.1038/srep33390

    PMID: 27615160

    Sample: Serum
  3. Journal of Ethnopharmacology (2020) IF: 3.69
    Laxative effect and mechanism of Tiantian Capsule on loperamide-induced constipation in rats

    DOI: 10.1016/j.jep.2020.113411

    PMID: 32980482

    Sample: Serum
  4. Archives of Physiology and Biochemistry (2020) IF: 2.575
    Angiotensin converting enzyme inhibitor potentiates the hypoglycaemic effect of NG-nitro-L-arginine methyl ester (L-NAME) in rats

    DOI: 10.1080/13813455.2020.1780263

    PMID: 32584611

    Sample: Serum
  5. Archivos De Bronconeumología (English Edition) (2015) IF: 2.979
    Protective Effects Of Infliximab On Lung Injury Induced By Methotrexate.

    DOI: 10.1016/j.arbres.2015.03.018

    PMID: 26071367

    Sample: Tissue homogenate
  6. BioMed Research International (2017) IF: 2.476
    Plumbagin Alleviates Capillarization Of Hepatic Sinusoids In Vitro By Downregulating ET-1, VEGF, LN, And Type IV Collagen.

    DOI: 10.1155/2017/5603216

    PMID: 28770223

    Sample: Cell culture supernatant
  7. Plos One (2016) IF: 2.806
    Effects Of The Infusion Of 4% Or 20% Human Serum Albumin On The Skeletal Muscle Microcirculation In Endotoxemic Rats.

    DOI: 10.1371/journal.pone.0151005

    PMID: 26942605

    Sample: Serum
  8. Clinical and Experimental Hypertension (2019) IF: 1.367
    Standardized ethanol-water extract of Ficus deltoidea Angustifolia reduces blood pressure in spontaneously hypertensive rats

    DOI: 10.1080/10641963.2018.1506467

    PMID: 30648895

    Sample: Serum
  9. Iranian Journal of Basic Medical Sciences (2015) IF: 1.424
    Is Adalimumab Protective In Ischemia-Reperfusion Injury In Lung.

    PMID: 26949496

    Sample: Tissue homogenate
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