Target name Nucleoprotein of the new coronavirus (SARS-CoV-2 N)
Alternative names 2019 novel coronavirus; Coronavirus; CoV; COVID-19 virus; HCoV-2; Human coronavirus 2019; SARS2;
SARS-CoV-2; Severe acute respiratory syndrome coronavirus 2; Nucleoprotein

Product Details

  • Abbreviation SARS-CoV-2 N
  • Uniprot No. P0DTC9
  • Sample types serum, plasma, swabs
  • Detection range 3.12 ng / mL-200 ng / mL
  • Sensitivity 0.78 ng / mL
  • Test time 1-5 h
  • Sample volume 50-100ul
  • Detection wavelength 450 nm
  • Infectious Diseases research area
  • Quantitative test principle
  • Measuring sandwich

Intra-assay precision (precision within an assay): CV% <8%

Three samples of known concentration were run twenty times on a plate for evaluation.

Inter-assay precision (precision between assays): CV% <10%

Three samples of known concentration were analyzed in twenty tests for evaluation.


Q: What products or services do you offer?

CUSABIO offers the highest quality ELISA kits for research use and personalized ELISA service at reasonable costs, allowing our clients to focus their valuable time and resources on advancing their own research.

CUSABIO also offers food safety and drug residue ELISA kits in feed and food that primarily focus on chemical contaminants comprising natural and man-made contaminants using antibiotic, mycotoxin, and hormone testing solutions.

Q: Why do we choose your ELISA kits?

CUSABIO has a solid platform for the development of an ELISA kit, mature antigen-antibody research, and development system. We are experts in a variety of ELISA technologies and the quality of our ELISA kits is world-leading. CUSABIO now offers a wide range of ELISA kits covering more than 9,000 different assay targets. 100% risk-free performance is guaranteed.

Q: Where can I find references to other researchers who have used your ELISA kits?

Our official website is updated to include articles from researchers who have published their results after using the CUSABIO ELISA kits. Click here to see more:

Application and selection of our products

Q: How to choose a suitable ELISA kit?

It depends on the species and analyte you are studying and your analysis purpose. You can make a better choice by consulting:

Q: What is the size of each ELISA kit?

48T and 96T are available. If you order bulk quantities like 5 × 96T and 10 × 96T, we could offer more discount. Now, you can also order a 24T trial size at a low cost.

Q: What quality controls and performance evaluation do you perform for each ELISA kit?

The range of linearity, linearity, lower limit of detection, precision, recovery, stability, specificity, and detection of natural samples are carefully evaluated under strict quality control standards to ensure good performance. Click here to learn more about quality control.

Q: How sensitive are ELISA kits?

The sensitivity of ELISA is highlighted on the datasheet for each kit.

For example, in human tumor necrosis factor α, TNF-α ELISA kit, the sensitivity is 1.95 pg/ml.

Q: Do you offer a free sample for a trial?

We are now offering a low-cost 24T-test size for all ELISA kits except food safety ELISA kits until the end of this year. It’s only $ 150 / kit, including the shipping cost. Only one 24T trial size kit can be applied for each product for a single customer. There is no quantity limit for the products you can apply. For more information, see

Q: What components are provided in your ELISA kit?

See the “Materials Provided” section in the kit manual.

Q: What preservatives do you use frequently?

We use Proclin 300 as preservatives.

Q: Do you offer standards or controls in every ELISA kit?

We offer positive and negative controls in qualitative ELISA kits, while we offer standards that can function as quality control in quantitative ELISA kits. The kit standards and the entire reagent system match.

The customer can draw a good standard curve through the experiment, which shows that the whole system, including the standards, works well so that the standards can play a quality control role. We suggest that you run duplicates for the standards.


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