Cross-reactivity observed with 1 or more available related molecules.Cross-species reactivity not tested.
No significant interference observed with available related molecules.
The QuantiGlo Human Endothelin-1 Chemiluminescent Immunoassay is a 4.5 hour solid phase ELISA designed to measure human Endothelin-1 levels in cell culture supernates, serum, EDTA plasma, and urine without extraction. It contains synthetic human Endothelin-1 and antibodies raised against the synthetic factor. This immunoassay has been shown to accurately quantitate human Endothelin-1. Results obtained using natural human Endothelin-1 showed dose curves that were parallel to the standard curves obtained using the QuantiGlo kit standards. These results indicate that this kit can be used to determine relative mass values of natural human Endothelin-1.
Intra-Assay Precision (Precision within an assay) Three samples of known concentration were tested on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays) Three samples of known concentration were tested in separate assays to assess inter-assay precision.
The recovery of synthetic human Endothelin-1 spiked to three different levels throughout the range of the assay in various matrices was evaluated.
Average % Recovery
Cell Culture Media (n=4)
EDTA Plasma (n=4)
To assess the linearity of the assay, samples containing or spiked with high concentrations of Endothelin-1 in various matrices were diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.
Preparation and Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Endothelin-1 (ET-1) is produced by many tissues including lung, kidney, brain, endocrine glands, and placenta. It is also expressed by several cell types including, mast cells, endothelial cells, epithelial and smooth muscle cells. The most prominent source is vascular endothelium. ET-1 is best known as a potent vasoconstrictor. Elevated blood ET-1 levels are associated with a variety of diseases, possibly as a function of a stress response.
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