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Human NOS2/iNOS(Nitric Oxide Synthase 2, Inducible) ELISA Kit

Citations(11)Uniprot : P35228

Cat.No.:E-EL-H0753
Reactivity: Human

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Product Details

Properties

Assay type	Sandwich-ELISA
Format	96T/48T
Assay time	3.5h
Detection range	78.13-5000 pg/mL
Sensitivity	46.88 pg/mL
Sample type &Sample volume	serum, plasma and other biological fluids; 100μL
Specificity	This kit recognizes Human NOS2/iNOS in samples. No significant cross-reactivity or interference between Human NOS2/iNOS 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 NOS2/iNOS 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 NOS2/iNOS. 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 NOS2/iNOS 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 NOS2/iNOS, 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 NOS2/iNOS. You can calculate the concentration of Human NOS2/iNOS 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 NOS2/iNOS were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human NOS2/iNOS 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)	276.20	441.40	2054.00	265.80	481.50	2256.90
Standard deviation	14.10	24.70	71.90	17.30	26.50	92.50
CV (%)	5.10	5.60	3.50	6.51	5.50	4.10

Recovery

The recovery of Human NOS2/iNOS 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)	95-108	101
EDTA plasma (n=8)	94-107	99
Cell culture media (n=8)	85-95	90

Linearity

Samples were spiked with high concentrations of Human NOS2/iNOS and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.

Target Information

Database Links	SwissProt: P35228
Synonyms	NOS2A, HEP-NOS, I-NOS
Research Area	Cancer, Metabolism, Neuroscience

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

JOURNAL OF INFECTIOUS DISEASES (2017) IF: 6.273
Influence of Leishmania RNA Virus 1 on Proinflammatory Biomarker Expression in a Human Macrophage Model of American Tegumentary Leishmaniasis

DOI: 10.1093/infdis/jix416

Sample: Cell culture supernatant
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022) IF: 5.19
Changes in blood parameters and metabolism in bullfrog tadpoles, Lithobates catesbeianus, (Shaw, 1802) after exposure to the Sorocaba River (São Paulo, Brazil) water

DOI: 10.1007/s11356-022-24590-5

Sample: liver
Frontiers in Immunology (2018) IF: 5.511
The Effect of C-Reactive Protein Isoforms on Nitric Oxide Production by U937 Monocytes/Macrophages

DOI: 10.3389/fimmu.2018.01500

Sample: U937 cells
Nutrients (2021) IF: 5.719
Effects of 12 Weeks Cosmos caudatus Supplement among Older Adults with Mild Cognitive Impairment: A Randomized, Double-Blind and Placebo-Controlled Trial

DOI: 10.3390/nu13020434

PMID: 33572715
Sample: Serum
JOURNAL OF CELLULAR AND MOLECULAR MEDICINE (2020) IF: 4.486
Differentially expressed lnc‐NOS2P3‐miR‐939‐5p axis in chronic heart failure inhibits myocardial and endothelial cells apoptosis via iNOS/TNFα pathway

DOI: 10.1111/jcmm.15740

Sample: plasma
INTERNATIONAL JOURNAL OF CARDIOLOGY (2016) IF: 4.638
Melatonin effects on myocardial ischemia–reperfusion injury: Impact on the outcome in patients undergoing coronary artery bypass grafting surgery

DOI: 10.1016/j.ijcard.2016.07.108

Sample: Plasma
Neuropsychiatry (2017) IF: 4.778
Plasma Pregnancy-Associated Plasma Protein A and CD40 are Potential Biomarkers of Vulnerable Plaque Associated with Middle Cerebral Artery Stenosis

DOI: 10.4172/Neuropsychiatry.1000277

Sample: plasma
International Journal of Medical Sciences (2022) IF: 3.738
Blood biomarkers in early bacterial infection and sepsis diagnostics in feverish young children

DOI: 10.7150/ijms.69859

Sample: serum
JOURNAL OF CLINICAL PHARMACY AND THERAPEUTICS (2021) IF: 2.512
Potential associations between variants of genes encoding regulators of inflammation, and mediators of inflammation in type 2 diabetes and insulin resistance

DOI: 10.1111/jcpt.13471

PMID: 34145611
Sample: serum
Journal of Immunology Research (2016) IF: 2.812
Monocyte-Derived Macrophages Are Impaired in Myelodysplastic Syndrome

DOI: 10.1155/2016/5479013

Sample: Cell culture supernatant
BMC Complementary and Alternative Medicine (2020) IF: 2.833
The effects of six months Persicaria minor extract supplement among older adults with mild cognitive impairment: a double-blinded, randomized, and placebo-controlled trial

DOI: 10.1186/s12906-020-03092-2

PMID: 33076878
Sample: Serum

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