At this time it is unknown for how long antibodies persist following infection or vaccination, and if the presence of antibodies confers protective immunity. Antibodies to SARS-CoV-2 are generally detectable in blood several days after initial infection or vaccination, although the duration of time antibodies are present post-infection or post-vaccination is not well characterized. Individuals may have detectable virus present for several weeks following seroconversion.

The Cov19 FluoBolt-DAT test, manufactured in Austria by Fianostics GmbH, is a duplex antibody test that is intended to identify individuals with an adaptive immune response to SARS-CoV-2, indicating recent or prior infection or vaccination. There is a high demand to know how protected populations are after COVID-19 onset or vaccination, this test is the next step in identifying immunity.


How the Cov19 FluoBolt-DAT Test Works

When performing the assay, 10 µl of a patient serum or plasma sample are simultaneously mixed with 50 µl of two different fluorescence-labeled tracer antibodies against the S1RBD and against the NC protein and incubated in our special fluorescence-enhancing microtiter plate for 60 minutes. By measuring at 2 different wavelengths, their displacement by homologous antibodies from the patient sample is determined simultaneously. The signals at one wavelength provide information about the concentration of anti-S1RBD antibodies. The signals at the other wavelength indicate the concentration of anti-nucleocapsid antibodies.

By using the supplied calibrators, a calibration curve for the anti-S1RBD and the antiNC antibodies is constructed, and the antibody concentration of a patient sample is read from it. With just a single measurement, this results in a quantitative determination of these
two antibody species against SARS-CoV-2, which represent the majority of the immune response and may protect against infection and illness.

Cov19 FluoBolt-DAT Test Standard Curves
For measurement, any commercially available fluorescence microtiter plate reader can be used.

Click here to learn more about the Cov19 FluoBolt-DAT test.


If you have any questions about this kit or our other offerings, contact us here.

IHC Antibodies

Eagle Biosciences, Inc. is excited to announce a new line of monoclonal IHC Antibodies. These anti-human antibodies are intended to be used to identify the presence of associated antigens in tissue samples. This identification should be made using light microscopy in formalin-fixed, paraffin-embedded (FFPE) tissue sections using immunohistochemistry test methods.  The use of these antibodies has been show to be an aid in the identification of neoplastic tissue, within the context of antibody panels. These IHC Antibodies are available in two formats. We offer a concentrated formula at volumes of 0.1 mL and 1.0 mL, as well as a prediluted formula at a volume of 7 mL.

Find a list of the popular and unique markers that we are now offering below.


IHC Antibodies

Monoclonal Mouse Anti-Human SOX-10 Antibody
Monoclonal Rabbit Anti-Human PD-L1 Antibody
Monoclonal Mouse Anti-Human HER2/neu Antibody
Monoclonal Rabbit Anti-Human Estrogen Receptor Antibody
Monoclonal Mouse Anti-Human BRAF V600E Antibody
Monoclonal Mouse Anti-Human p63 Antibody
Monoclonal Mouse Anti-Human p16 INK4A Antibody
Monoclonal Mouse Anti-Human MLH1 Antibody
Monoclonal Mouse Anti-Human MDM2 Antibody
Monoclonal Rabbit Anti-Human Ki-67 Antibody
Monoclonal Mouse Anti-Human IDH1 R132H Antibody


If you have any questions about these products or any of our other offerings, contact us here.

New Cytokine Assay Kits

Eagle Biosciences is excited to announce a new line of cytokine assays!

About Cytokines

Cytokines are a cornerstone of any study that deals with inflammation. Cytokine profiles as a whole and the relative abundance of one cytokine, and the endogenous inhibitors, define an inflammatory process that is in motion. Specific cytokines of interest include interleukins, interferons, chemokins, and members of the tumor necrosis factor and TGF beta super families.

Cytokine sandwich ELISA are sensitive enzyme immunoassays that can specifically detect and quantitate the concentration of soluble cytokine and chemokine proteins. They allow researchers to study the complicated physiological and pathological roles of cytokines in systemic inflammatory reactions, and accurately measure the levels of specific cytokines under physiological and pathological conditions which can provide valuable insight into the changes associated with different disease states.


Our Available Cytokine Assays

Human IL-4 ELISA Assay Kit
Human IL-6 High Sensitivity ELISA Assay Kit
Human IL-10 ELISA Assay Kit
Mouse IL-4 ELISA Assay Kit
Mouse IL-8 ELISA Assay Kit
Mouse IL-12 ELISA Assay Kit
Rat IFN-gamma ELISA Assay Kit
Rat IL-2 ELISA Assay Kit
Rat IL-4 ELISA Assay Kit
Rat IL-8 ELISA Assay Kit
Rat IL-10 ELISA Assay Kit
Rat IL-12/P40 ELISA Assay Kit
VEGF ELISA Assay Kit
Angiopoietin-2 ELISA Assay Kit

If you have any questions about our offerings contact us here.

IL-6 High Sensitive ELISA Assay Kit New Product

Eagle Biosciences is excited to announce the Human IL-6 High Sensitive ELISA Assay Kit from Biomedica! This powerful kit offers a wide dynamic range with extraordinary sensitivity. It provides superior performance and reliability for all your researching needs.


About Interleukin-6 (IL-6)

IL-6 is a pleiotropic cytokine that plays a crucial role in regulating the acute phase response, inflammation, hematopoiesis, glucose metabolism, bone metabolism, and cancer progression. IL-6 is an early marker of acute inflammation. In patients with COVID-19, IL-6 levels are significantly elevated and associated with adverse clinical outcomes. Therefore, serum IL-6 is an important biomarker for severity of COVID-19 and has great potential for guiding treatment of the disease.

IL-6 can reliably be measured by ELISA (cat.no. BI-IL6) in human serum, plasma and urine samples with Biomedica’s fully validated assay kit. The kit is highly sensitive and offers a wide dynamic range. The kit incorporates ready to use standards and controls.

Features & Benefits of the Human IL-6 High Sensitive ELISA Assay Kit

√ EASY ready to use calibrators & controls included
√ High SENSITIVITY measurable values in serum and plasma
√ Full validation package – the assay is optimized for clinical samples
√ HIGH QUALITY GUARANTEED


Related publications:

Interleukin-6 in Covid-19: A systematic review and meta-analysis. Coomes EA, Haghbayan H. Rev Med Virol. 2020 Nov;30(6):1-9. Full text.

Assessing the importance of interleukin-6 in COVID-19. Chen LYC, Hoiland RL, Stukas S, Wellington CL, Sekhon MS. Lancet Respir Med. 2021 Feb;9(2):e13. Full text.


If you have any questions about the Human Il-6 High Sensitive ELISA Assay Kit or any of our other offerings, contact us here.

Polystreptavidin R Product Announcement

Eagle Biosciences announces new Polystreptavidin R (Polystrept R) Extraordinary high Biotin binding capacity! This reagent is for surface coating of plastics, membranes, beads and etc. with maximum biotin binding capacity. It improves the signal-noise-relation and saves material costs.

About Streptavidin

Streptavidin is a tetrameric protein (4 x 13 kDa), which binds very tightly to the small molecule Biotin. The binding constant for this interaction is extremely high (Ka ~ 1013 M-1) and turns the Streptavidin/Biotin system into a basis of many biochemical applications. Streptavidin-coated surfaces are characterized by very low nonspecific bindings. Streptavidin coating of solid phases offers a universal immobilization principle for the detection and analysis of proteins, peptides, PCR-fragments etc.

About Polystreptavidin R

Polystreptavidin R is characterized by a immensely high biotin binding capacity in combination with robustness against thermal and chemical influences. Polystreptavidin R is easy to use and suitable for coatings on membranes, beads, microplates, biochips and other plastic materials.

Polystreptavidin R at the strip test (lateral flow assay)

Polystreptavidin R shows outstanding properties when coated on nitrocellulose membranes. The very high biotin binding capacity and the very low washout effects provide a significant signal enhancement at the test line. Highly efficient immobilization of biotinylated molecules and low non-specific binding provide a high signal-to-noise ratio. Polystreptavidin R is a liquid concentrate and can be easily diluted with a neutral buffer for coating or spotting and dried at room temperature without any further production steps. If required, stabilizers can also be added. At temperatures of 2°C to 50°C Polystreptavidin R is stable for at least 24 months and supports a long shelf life.

Why use streptavidin-coated microplates and Polystrept R with lateral flow test strips?

  • Convenient method for a uniform and stable immobilization of biotinylated molecules
  • Immobilization of Biomolecules on solid phases in a directed manner, while avoiding or minimizing denaturation
  • Ready-to-use, no washing or blocking steps required
  • High signal-to-noise ratio
  • Low nonspecific binding
  • Long shelf life
  • Lower reagent consumption and especially enormous cost savings with lateral flow test stripes

Related Products

Ultra-Sensitive Streptavidin Coated Clear 96 Well Microplate
Biotin Microtiter Plate Assay

If you have any questions about Polystreptavidin R or our other offerings, contact us here.

We, at Eagle Biosciences, Inc. are rapidly expanding our selection of Coronavirus Assays by welcoming two new research kits! With the ongoing pandemic, it’s more important now than ever that we continue to offer the highest quality assays to our customers. Here are our newest additions;


Anti-SARS-CoV-2 S1 (RBD) IgG ELISA Assay
Catalog Number: E111

The Anti-SARS-CoV-2 S1 (RBD) IgG ELISA Assay Kit is manufactured in Germany by Mediagnost. This assay is a highly specific enzyme immunoassay for the detection of IgG antibodies directed against SARS-CoV-2-S1 Receptor Binding Domain (RBD) in human blood. In this assay the recombinant Receptor Binding Domain (RBD) of SARS-CoV-2 S1 spike protein, which binds the ACE2 receptor, is used. The use of RBD increases the specificity of the assay since the domain is identical with SARS-CoV but not with MERS-CoV for example. Antibodies directed against the RBD neutralize both virus strains SARS-CoV and SARS-CoV-2.

Size: 1×96 wells
Incubation Time: 2 hours 40 minutes
Sample Type: Serum and Plasma
Sample Size: 100 µl
Controls Included

To learn more about the Anti-SARS-CoV-2 S1 (RBD) IgG ELISA Assay click here*


Anti-SARS-CoV-2 (S1, S2, N) IgG ELISA Assay Kit
Catalog Number: 3940

The Anti-SARS-CoV-2 (S1, S2, N) IgG ELISA Assay Kit is manufactured in Germany by Generic Assays. This assay is a module based Enzyme Immunoassay for the confirmation of positive IgG antibodies against SARS coronavirus 2 (SARS-CoV-2) in the first screening. The Anti-SARS-CoV-2 (S1, S2, N) IgG ELISA Assay Kit determines the specificity of antibodies against the main immunodominant antigens (Spike Glycoprotein 1, Spike Glycoprotein 2, Nucleocapsid) of SARS-CoV-2 in human serum or plasma. This test kit consists of modules separately coated with the major antigens of the virus as seen in the illistration below:

Size: 96 wells (24 samples x 4)
Incubation Time: 2 hours
Sample Type: Serum or Plasma
Number Of Tests Per Kit: 24 (22 samples + controls)
Sample Size: 50 µl
Controls Included

To learn more about the Anti-SARS-CoV-2 (S1, S2, N) IgG ELISA Assay Kit click here*

 

Check out our entire Coronavirus Series here or contact us with any questions or inquires

 

*These kits are for research use only and should not be used for diagnostic procedures.

Through our collaboration with ImmunAware, we are excited to offer a new range of products: easYmer MHC Tetramers. This product allows laboratories to easily generate monomers using their choice of peptide. The resulting monomers can also be easily tetramerized using fluorophore conjugated streptavidin. These tetramers can then be used to stain cognate T cells for flow cytometry. easYmers allow end users to rapidly produce large quantities of pMHC monomers with a single epitope, to produce and screen pMHC monomers with many different peptide epitope candiates in parallel, and to validate peptide HLA bonding.

Click here to view our available easYmer MHC tetramer kits.

If you have questions about easYmers or if you’re looking for a specific kit, contact us and we’ll be happy to assist.