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Human IL-9(Interleukin 9) ELISA Kit

Citations(4)Uniprot : P15248

Cat.No.:E-EL-H0180
Reactivity: Human

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Product Details

Properties

Assay type	Sandwich-ELISA
Format	96T/48T
Assay time	3.5h
Detection range	15.63-1000 pg/mL
Sensitivity	9.38 pg/mL
Sample type &Sample volume	serum, plasma and other biological fluids; 100μL
Specificity	This kit recognizes Human IL-9 in samples. No significant cross-reactivity or interference between Human IL-9 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 Human IL-9 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 Human IL-9. Standards or samples are added to the micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human IL-9 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 Human IL-9, 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 Human IL-9. You can calculate the concentration of Human IL-9 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.

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°C
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 Human IL-9 were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human IL-9 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)	51.10	135.70	409.20	46.40	133.90	412.50
Standard deviation	3.00	6.90	18.40	3.00	6.20	13.60
CV (%)	5.87	5.08	4.50	6.47	4.63	3.30

Recovery

The recovery of Human IL-9 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)	92-103	97
EDTA plasma (n=8)	93-105	100
Cell culture media (n=8)	90-102	96

Target Information

Database Links	SwissProt: P15248
Synonyms	IL9, HP40, P40, TCGFIII, TCGF3, P40 T-cell and Mast Cell Growth Factor, P40 Cytokine, T-cell Growth Factor P40
Research Area	Cancer, Immunology

Assay Procedures

	1. Add 100μL standard or sample to the wells. Incubate for 90 min at 37°C
	2. Discard the liquid, immediately add 100μL Biotinylated Detection Ab working solution to each well. Incubate for 60 min at 37°C
	3. Aspirate and wash the plate for 3 times
	4. Add 100μL HRP conjugate working solution. Incubate for 30 min at 37°C. Aspirate and wash the plate for 5 times
	5. Add 90μL Substrate Reagent. Incubate for 15 min at 37°C
	6. Add 50μL Stop Solution
	7. Read the plate at 450nm immediately. Calculation of the results

Citations

INFLAMMATORY BOWEL DISEASES (2017) IF: 4.525
Serum Interleukin 9 Levels Predict Disease Severity and the Clinical Efficacy of Infliximab in Patients with Crohn's Disease

DOI: 10.1097/MIB.0000000000001172

Sample: serum,C6 cell
INFLAMMATION RESEARCH (2021) IF: 4.575
Molecular hydrogen alleviates asthma through inhibiting IL-33/ILC2 axis

DOI: 10.1007/s00011-021-01459-w

PMID: 33852061
Sample: Serum,Bronchoalveolar Lavage Fluid
CLINICAL AND EXPERIMENTAL DERMATOLOGY (2019) IF: 1.771
Wheat‐dependent exercise‐induced anaphylaxis in Chinese people: a clinical research on 33 cases with antigenic analysis of wheat proteins

DOI: 10.1111/ced.14035

Sample: Serum
Journal of Immunology Research (2015)
The Potential Role of Th9 Cell Related Cytokine and Transcription Factors in Patients with Hepatic Alveolar Echinococcosis

DOI: 10.1155/2015/895416

Sample: Plasma

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