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Human Ang-Ⅱ(Angiotensin Ⅱ) ELISA Kit

Citations(8)Uniprot : P01019

Cat.No.:E-EL-H0326
Reactivity: Human

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Product Details

Properties

Assay type	Competitive-ELISA
Format	96T/48T
Assay time	2.0h
Detection range	31.25-2000 pg/mL
Sensitivity	18.75 pg/mL
Sample type &Sample volume	serum, plasma and other biological fluids; 50μL
Specificity	This kit recognizes Ang-Ⅱ in samples. No significant cross-reactivity or interference between Ang-Ⅱ 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 Ang-Ⅱ concentrations in serum, plasma and other biological fluids.

Test Principle

This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with Ang-Ⅱ. During the reaction, Ang-Ⅱ in the sample or standard competes with a fixed amount of Ang-Ⅱ on the solid phase supporter for sites on the Biotinylated Detection Ab specific to Ang-Ⅱ. Excess conjugate and unbound sample or standard are washed away, and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well and incubated. Then a TMB substrate solution is added to each well. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns from blue to yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The concentration of Ang-Ⅱ in tested samples can be calculated 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.

Item	Specifications	Storage
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℃
Plate Sealer	5 pieces
Manual	1 copy
Certificate of Analysis	1 copy

Technical Data

Precision

Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Ang-Ⅱ were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Ang-Ⅱ 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)	101.10	272.50	948.90	108.40	291.70	898.00
Standard deviation	6.70	14.40	43.60	6.60	14.60	44.00
CV (%)	6.63	5.28	4.59	6.09	5.01	4.90

Recovery

The recovery of Ang-Ⅱ 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)	88-103	95
EDTA plasma(n=8)	95-107	101
Cell culture media(n=8)	91-105	96

Linearity

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

Target Information

Database Links	SwissProt: P01019
Synonyms	Angiotensin-2
Research Area	Cancer, Cardiovascular, Metabolism, Signal transduction

Assay Procedures

	1. Add 50μL standard or sample to the wells, immediately add 50μL Biotinylated Detection Ab working solution to each well. Incubate for 45 min at 37°C
	2. Aspirate and wash the plate for 3 times
	3. Add 100μL HRP conjugate working solution. Incubate for 30 min at 37°C. Aspirate and wash the plate for 5 times
	4. Add 90μL Substrate Reagent. Incubate for 15 min at 37°C
	5. Add 50μL Stop Solution
	6. Read the plate at 450nm immediately. Calculation of the results

Citations

JOURNAL OF HEADACHE AND PAIN (2021) IF: 7.277
HMGB1, NLRP3, IL-6 and ACE2 levels are elevated in COVID-19 with headache: a window to the infection-related headache mechanism

DOI: 10.1186/s10194-021-01306-7

PMID: 34384355
Sample: serum
Frontiers in Endocrinology (2022) IF: 6.055
Children With Short Stature Display Reduced ACE2 Expression in Peripheral Blood Mononuclear Cells

DOI: 10.3389/fendo.2022.912064

PMID: 35909539
Sample: serum
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2022) IF: 6.208
Metformin Alleviates Epirubicin-Induced Endothelial Impairment by Restoring Mitochondrial Homeostasis

DOI: 10.3390/ijms24010343

Sample: Human Umbilical Vein Endothelial Cells (HUVECs)
Journal of Translational Medicine (2021) IF: 5.531
Pulmonary midkine inhibition ameliorates sepsis induced lung injury

DOI: 10.1186/s12967-021-02755-z

PMID: 33639987
Sample: Plasma
Frontiers in Pharmacology (2022) IF: 5.811
Blocking VCAM-1 Prevents Angiotensin II-Induced Hypertension and Vascular Remodeling in Mice.

DOI: 10.3389/fphar.2022.825459

Sample: serum
NUTRITION METABOLISM AND CARDIOVASCULAR DISEASES (2022) IF: 4.222
Type 1 diabetes is associated with significant changes of ACE and ACE2 expression in peripheral blood mononuclear cells

DOI: 10.1016/j.numecd.2022.01.029

PMID: 35260304
Sample: peripheral blood mononuclear cell
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2020) IF: 4.556
Sex Differences in Proatherogenic Cytokine Levels

DOI: 10.3390/ijms21113861

PMID: 32485823
Sample: Serum
Computational and Mathematical Methods in Medicine (2022) IF: 2.238
Angiotensin II Mediates Cardiomyocyte Hypertrophy in Atrial Cardiomyopathy via Epigenetic Transcriptional Regulation

DOI: 10.1155/2022/6312100

PMID: 35756425
Sample: heart tissue

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