Enzyme-linked immunosorbent assay (ELISA) is an analytic biochemical assay that utilizes enzyme-linked antibodies on a microwell platform to quantitate specific proteins within biological samples. Visual detection is then achieved by adding the enzyme’s substrate, which causes a color-changing reaction to occur. There are three different types of ELISA that are most commonly used: indirect ELISA, sandwich ELISA and competitive ELISA. These assays are extremely useful for high-throughput diagnostic screenings drug testing.
Novus offers a range of support options for ELISA when you buy a product to help you with your ELISA experiment including:
| Conjugate | Catalog # | Availability | Size | Price |
|---|---|---|---|---|
| Allophycocyanin | NB7487APC | |||
| Biotin | NB7487B | |||
| DyLight 350 | NB7487UV | |||
| DyLight 405 | NB7487V | |||
| DyLight 488 | NB7487G | |||
| DyLight 550 | NB7487R | |||
| DyLight 594 | NB7487DL594 | |||
| DyLight 650 | NB7487C | |||
| DyLight 680 | NB7487FR | |||
| DyLight 755 | NB7487IR | |||
| FITC | NB7488 | |||
| HRP | NB7489 | |||
| PE | NB7487PE | |||
| PerCP | NB7487PCP | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| Pre-adsorbed | NB7488 | |||
| Pre-adsorbed | NB7489 | |||
| Pre-adsorbed | NB7487B | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| BSA Free | NB110-41572SS | |||
| Azide and BSA Free | NBP2-80672 | |||
| Conjugate | Catalog # | Availability | Size | Price |
|---|---|---|---|---|
| Alexa Fluor 350 | FAB9435U-100UG | |||
| Alexa Fluor 405 | FAB9435V-100UG | |||
| Alexa Fluor 488 | FAB9435G-100UG | |||
| Alexa Fluor 532 | FAB9435X-100UG | |||
| Alexa Fluor 594 | FAB9435T-100UG | |||
| Alexa Fluor 647 | FAB9435R-100UG | |||
| Alexa Fluor 700 | FAB9435N-100UG | |||
| Alexa Fluor 750 | FAB9435S-100UG | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| Carrier Free | MAB9435-SP | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| Azide and BSA Free | NBP2-54457-100ug | |||
![N/A alpha 1-Acid Glycoprotein [HRP]](http://images.novusbio.com/fullsize2/DATA_alpha_1Acid_Glycoprotein_DAGP00_ELISA_568.jpg "N/A alpha 1-Acid Glycoprotein [HRP]")
![N/A alpha 1-Acid Glycoprotein [HRP]](http://images.novusbio.com/fullsize2/alpha_1-Acid_Glycoprotein_DAGP00_ELISA_26.jpg)
![N/A IL-9 [Biotin]](http://images.novusbio.com/fullsize2/DATA_IL9_DY20905_ELISA_2385.jpg "N/A IL-9 [Biotin]")
![Western Blot: CITED4 Antibody (HT13-2D6.3) [NB110-41572] - Detection of human CITED4 in 20ug of transfected whole cell Hep3B lysate using NB110-415752. Photo courtesy of Dr. DeCaprio, DFCI.](http://images.novusbio.com/fullsize/CITED4-Antibody-HT13-2D6-3-Western-Blot-NB110-41572-img0003.jpg "Western Blot: CITED4 Antibody (HT13-2D6.3) [NB110-41572] - Detection of human CITED4 in 20ug of transfected whole cell Hep3B lysate using NB110-415752. Photo courtesy of Dr. DeCaprio, DFCI.")
![Immunohistochemistry-Paraffin: CITED4 Antibody (HT13-2D6.3) [NB110-41572] - CITED4 was detected in immersion fixed paraffin-embedded sections of human heart using Mouse Anti-Human CITED4 (HT13-2D6.3) Monoclonal Antibody (Catalog # NB110-41572) at 1:300 for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC001). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to the cytoplasm in cardiomyocytes.](http://images.novusbio.com/fullsize/CITED4-Antibody-HT13-2D6-3-Immunohistochemistry-Paraffin-NB110-41572-img0009.jpg)
![Flow Cytometry: CITED4 Antibody (HT13-2D6.3) [NB110-41572] - Intracellular flow cytometric staining of 1 x 10^6 CHO (A) and HEK-293 (B) cells using CITED4 antibody (dark blue). Isotype control shown in orange. An antibody concentration of 1 ug/1x10^6 cells was used.](http://images.novusbio.com/fullsize/CITED4-Antibody-HT13-2D6-3-Flow-Cytometry-NB110-41572-img0008.jpg)
![Western Blot: ROBO1 Antibody [NB600-1254] - Western Blot of ROBO1 antibody. Lane M: Super Signal Molecular Weight Marker.Lane 1: HeLa WCL. Load: 30 ug lysate.Primary antibody: ROBO1 antibody at 1:1,000 for overnight at 4C.Secondary antibody: Peroxidase rabbit secondary antibody at 1:40,000 for 30 min at RT.Block: Blocking Buffer for Fluorescent Western Blotting for 30 min at RT.Predicted/Observed size: 181 kDa, 181 kDa for ROBO1. Other band(s): lower bands not identified.](http://images.novusbio.com/fullsize/ROBO1-Antibody-Western-Blot-NB600-1254-img0015.jpg "Western Blot: ROBO1 Antibody [NB600-1254] - Western Blot of ROBO1 antibody. Lane M: Super Signal Molecular Weight Marker.Lane 1: HeLa WCL. Load: 30 ug lysate.Primary antibody: ROBO1 antibody at 1:1,000 for overnight at 4C.Secondary antibody: Peroxidase rabbit secondary antibody at 1:40,000 for 30 min at RT.Block: Blocking Buffer for Fluorescent Western Blotting for 30 min at RT.Predicted/Observed size: 181 kDa, 181 kDa for ROBO1. Other band(s): lower bands not identified.")
![Immunocytochemistry/Immunofluorescence: ROBO1 Antibody [NB600-1254] - Staining of Robo1 in undifferentiated, immortalized human podocytes by Immunocytochemistry/ Immunofluorescence. Cells were fixed with 2% paraformaldehyde and 4% sucrose at room temperature for 10 minutes. The cells were then washed once with PBS, permeabilized with 0.3% Triton X-100 for 10 minutes and incubated with blocking solution (2% FCS, 2% BSA, 0.2% fish gelatin) for 30 minutes, before further incubation with primary Ab for 1 hour. An Alexa Fluor 488 goat anti-rabbit IgG secondary antibody was used at a dilution of 1/200. DAPI was used for nuclear counterstaining.](http://images.novusbio.com/fullsize/ROBO1-Antibody-Immunocytochemistry-Immunofluorescence-NB600-1254-img0005.jpg)
![Immunohistochemistry: ROBO1 Antibody [NB600-1254] - Affinity Purified ROBO1 antibody was used at a concentration of 5 ug/ml to detect ROBO1 in a variety of tissues including multi-human, multi-brain and multi-cancer slides. This image shows staining of human brain tissue. Tissue was formalin-fixed and paraffin embedded.](http://images.novusbio.com/fullsize/ROBO1-Antibody-Immunohistochemistry-NB600-1254-img0016.jpg)
![Western Blot: ROBO1 Antibody [NB600-1254] - Biotinylated human mTOR present in a 293T whole cell lysates. Cells were serum-starved for 24 hours prior to harvest. ~20ug of lysate was loaded per lane for SDS-PAGE. Untreated cells are shown in lane 1, whereas cells in lane 2 were treated with IGF-1 (100 ng/ml) for 20 min prior to harvest. Follow reaction of antibody with a 1:2000 dilution of HRP Goat-a-Rabbit IgG for visualization.](http://images.novusbio.com/fullsize/ROBO1-Antibody-Western-Blot-NB600-1254-img0012.jpg)
![Western Blot: ROBO1 Antibody [NB600-1254] - Western blot using Affinity Purified ROBO1 antibody shows detection of a band at ~181 kDa corresponding to ROBO1 present in mouse brain lysate (arrowhead). Approximately 35 ug of lysate was separated by 4-8% SDS-PAGE and transferred onto nitrocellulose. After blocking the membrane was probed with the primary antibody diluted to 1:1,000. Reaction occurred 2h at room temperature followed by washes and reaction with a 1:10,000 dilution of IRDye(TM)800 conjugated Gt-a-Rabbit IgG [H&L] MX for 45 min at room temperature. IRDye(TM)800 fluorescence image was captured using the Odyssey(R) Infrared Imaging System developed by LI-COR. IRDye is a trademark of LI-COR, Inc. Other detection systems will yield similar results.](http://images.novusbio.com/fullsize/ROBO1-Antibody-Western-Blot-NB600-1254-img0013.jpg)
![Western Blot: ROBO1 Antibody [NB600-1254] - Western Blot of ROBO1 antibody. Marker: Opal Pre-stained ladder. Lane 1: HEK293 lysate. Lane 2: HeLa Lysate. Lane 3: MCF-7 Lysate. Lane 4: Jurkat Lysate. Lane 5: A431 Lysate. Lane 6: A549 Lysate. Lane 7: LNCap Lysate. Lane 8: MOLT-4 Lysate. Lane 9: Ramos Lysate. Lane 10: Raji Lysate. Lane 11: A-172 Lysate. Lane 12: NIH/3T3 Lysate. Load: 35 ug per lane. Primary antibody: ROBO1 antibody at 1ug/mL overnight at 4C. Secondary antibody: Peroxidase rabbit secondary antibody at 1:30,000 for 60 min at RT. Blocking Buffer: 1% Casein-TTBS for 30 min at RT.Predicted/Observed size: 181kDa for ROBO1.](http://images.novusbio.com/fullsize/ROBO1-Antibody-Western-Blot-NB600-1254-img0014.jpg)
![Immunohistochemistry: ROBO1 Antibody [NB600-1254] - 1/50 staining mouse lung tissue sections (adult, frozen 100um wholemount sections) by IHC-Fr. The tissue was paraformaldehyde fixed and permeabilized with triton x-100 before incubation with the antibody for 16 hours at 4C.](http://images.novusbio.com/fullsize/ROBO1-Antibody-Immunohistochemistry-NB600-1254-img0011.jpg)
![ELISA: ROBO1 Antibody [NB600-1254] - ELISA results of purified ROBO1 antibody tested against BSA-conjugated peptide of immunizing peptide. Each well was coated in duplicate with 0.1ug of conjugate. The starting dilution of antibody was 5ug/ml and the X-axis represents the Log10 of a 3-fold dilution. This titration is a 4-parameter curve fit where the IC50 is defined as the titer of the antibody. Assay performed using 3% fish gel, Goat anti-Rabbit IgG Antibody Peroxidase Conjugated (Min X Bv Ch Gt GP Ham Hs Hu Ms Rt & Sh Serum Proteins) and TMB ELISA Peroxidase Substrate.](http://images.novusbio.com/fullsize/ROBO1-Antibody-ELISA-NB600-1254-img0017.jpg)
![Immunohistochemistry-Paraffin: beta Amyloid 42 Antibody [NBP2-44113] - Detection of beta Amyloid deposits in a case of Alzheimer's disease. Image from a verified customer review.](http://images.novusbio.com/fullsize/beta-Amyloid-42-Antibody-Immunohistochemistry-Paraffin-NBP2-44113-img0003.jpg "Immunohistochemistry-Paraffin: beta Amyloid 42 Antibody [NBP2-44113] - Detection of beta Amyloid deposits in a case of Alzheimer's disease. Image from a verified customer review.")
![ELISA: beta Amyloid 42 Antibody [NBP2-44113] - Results of purified Polyclonal anti-beta amyloid 42 antibody tested against BSA-conjugated beta amyloid 42 peptide (green) and BSA-conjugated beta amyloid 40 peptide (blue).](http://images.novusbio.com/fullsize/beta-Amyloid-42-Antibody-ELISA-NBP2-44113-img0004.jpg)
![Western Blot: beta Amyloid Antibody [NBP1-78007] - Western Blot of beta Amyloid antibody. Lane 1: Opal Prestained Molecular Weight Martker. Lane 2: HEK293T Whole Cell Lysate. Lane 3: Mouse Brain Whole Cell Lysate. Lane 4: A-172 Whole Cell Lysate.Load: 10ug/lane. Primary Antibody: Anti-beta Amyloid at 1ug/mL overnight at 2-8C. Secondary Antibody: Goat Anti-Rabbit IgG HRP Conjugated at 1:70,000 for 30min at RT. Block: BlockOut Buffer. Predicted MW: ~40-50kDa. Observed MW: ~48kDa.](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Western-Blot-NBP1-78007-img0021.jpg "Western Blot: beta Amyloid Antibody [NBP1-78007] - Western Blot of beta Amyloid antibody. Lane 1: Opal Prestained Molecular Weight Martker. Lane 2: HEK293T Whole Cell Lysate. Lane 3: Mouse Brain Whole Cell Lysate. Lane 4: A-172 Whole Cell Lysate.Load: 10ug/lane. Primary Antibody: Anti-beta Amyloid at 1ug/mL overnight at 2-8C. Secondary Antibody: Goat Anti-Rabbit IgG HRP Conjugated at 1:70,000 for 30min at RT. Block: BlockOut Buffer. Predicted MW: ~40-50kDa. Observed MW: ~48kDa.")
![Immunocytochemistry/Immunofluorescence: beta Amyloid Antibody [NBP1-78007]](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Immunocytochemistry-Immunofluorescence-NBP1-78007-img0015.jpg)
![Immunohistochemistry: beta Amyloid Antibody [NBP1-78007] - Human Heart (formalin-fixed, paraffin-embedded) stained with beta Amyloid antibody at 5 ug/ml followed by biotinylated goat anti-rabbit IgG secondary antibody, alkaline phosphatase-streptavidin and chromogen.](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Immunohistochemistry-NBP1-78007-img0024.jpg)
![Western Blot: beta Amyloid Antibody [NBP1-78007] - Mouse Brain (Lane 1) and Mouse Spinal Chord (Lane 2) were run on a 4-20% gradient gel, Blocked in 1% BSA-TBS-T 30 min RT and probed with Rb-a-Beta Amyloid 1:1000 in 1% BSA-TBS-T o/n 4C. Note: observed band higher than predicted molecular weight of 5 kDa.](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Western-Blot-NBP1-78007-img0010.jpg)
![Western Blot: beta Amyloid Antibody [NBP1-78007] - Lane 1: HEK293 WCL. Lane 2: Mouse Brain WCL. Lane 3: A-172 WCL. Load: 10.0ug per lane. Primary antibody: Beta Amyloid Antibody at 1:1,000 overnight at 4C. Secondary antibody: Peroxidase Conjugated Goat Anti Rabbit IgG at 1:40,000 for 30 min at RT. Block for 30 min at RT. Note: observed band higher than predicted molecular weight of 5 kDa.](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Western-Blot-NBP1-78007-img0018.jpg)
![Western Blot: beta Amyloid Antibody [NBP1-78007] - Western Blot of beta Amyloid antibody. Marker: Opal Pre-stained ladder. Lane 1: HEK293 lysate. Lane 2: HeLa Lysate.Lane 3: MCF-7 Lysate.Lane 4: Jurkat Lysate.Lane 5: A431 Lysate.Lane 6: LNCaP Lysate.Lane 7: A-172 Lysate.Lane 8: NIH/3T3 Lysate. Load: 35 ug per lane.Primary antibody: beta Amyloid antibody at 1:5,000 for overnight at 4C.Secondary antibody: Peroxidase rabbit secondary antibody at 1:30,000 for 60 min at RT.Blocking Buffer: 1% Casein-TTBS for 30 min at RT.Predicted MW: ~40-50 kDa. Observed size: ~48 kDa for beta Amyloid.](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Western-Blot-NBP1-78007-img0019.jpg)
![Western Blot: beta Amyloid Antibody [NBP1-78007] - Western Blot of beta Amyloid antibody. Lane 1: Opal Prestained Molecular Weight Martker. Lane 2: HEK293T Whole Cell Lysate. Lane 3: Mouse Brain Whole Cell Lysate. Lane 4: A-172 Whole Cell Lysate.Lane 5: Daudi Whole Cell Lysate. Load: 10ug/lane. Primary Antibody: Anti-beta Amyloid at 1:1000 overnight at 2-8C. Secondary Antibody: Goat Anti-Rabbit IgG HRP Conjugated at 1:70,000 for 30min at RT. Block: BlockOut Buffer. Predicted MW: ~40-50kDa. Observed MW: ~48kDa.](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Western-Blot-NBP1-78007-img0020.jpg)
![Immunohistochemistry-Paraffin: beta Amyloid Antibody [NBP1-78007] - Human, multi-brain and multi-cancer slides. Within the multi-tumor block, the antibody showed variable levels of nuclear and cytoplasmic staining between individual tumors, with some tumors showing moderate staining. This image shows EGR-1 staining of human ovarian carcinoma.](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Immunohistochemistry-Paraffin-NBP1-78007-img0008.jpg)
![Immunohistochemistry: beta Amyloid Antibody [NBP1-78007] - Immunohistochemistical detection of beta Amyloid using beta Amyloid antibody on TG APP23 mouse brain cortex frozen sections. beta Amyloid antibody used at 1/200 and incubated for 2 hours in TBS/BSA/Tween/azide. Fluorescent labelled anti rabbit IgG was then added. Carl Hobbs, King`s College London, United Kingdom](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Immunohistochemistry-NBP1-78007-img0022.jpg)
![Immunohistochemistry: beta Amyloid Antibody [NBP1-78007] - Immunohistochemistry with beta Amyloid antibody showing amyloid beta plaque staining in human Alzheimer’s disease brain at 10x and 20x (B & C). Staining was performed on Leica Bond system using the standard protocol. Formalin fixed/paraffin embedded tissue sections were subjected to antigen retrieval with E1 (Leica Microsystems) retrieval solution for 20 min and then incubated with rabbit beta Amyloid antibody at 1:100 dilution for 60 minutes. Biotinylated Anti-rabbit secondary antibody was used at 1:200 dilution to detect primary antibody. The reaction was developed using streptavidin-HRP conjugated compact polymer system and visualized with chromogen substrate, 3’3-diamino-benzidine substrate (DAB). The sections were then counterstained with hematoxylin to detect cell nuclei.](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-Immunohistochemistry-NBP1-78007-img0023.jpg)
![ELISA: beta Amyloid Antibody [NBP1-78007] - ELISA results of purified beta Amyloid antibody tested against BSA-conjugated peptide of immunizing peptide. Each well was coated in duplicate with 0.1ug of conjugate. The starting dilution of antibody was 5ug/ml and the X-axis represents the Log10 of a 3-fold dilution. This titration is a 4-parameter curve fit where the IC50 is defined as the titer of the antibody. Assay performed using 3% fish gel, Goat anti-Rabbit IgG Antibody Peroxidase Conjugated (Min X Bv Ch Gt GP Ham Hs Hu Ms Rt & Sh Serum Proteins) and TMB ELISA Peroxidase Substrate.](http://images.novusbio.com/fullsize/beta-Amyloid-Antibody-ELISA-NBP1-78007-img0025.jpg)
![Western Blot: Galectin-1 Antibody (GAL1/1831) [NBP2-53212] - Western Blot Analysis of JEG-3 and K562 cell lysate using Galectin-1 antibody (GAL1/1831).](http://images.novusbio.com/fullsize/Galectin-1-Antibody-GAL1-1831-Western-Blot-NBP2-53212-img0006.jpg "Western Blot: Galectin-1 Antibody (GAL1/1831) [NBP2-53212] - Western Blot Analysis of JEG-3 and K562 cell lysate using Galectin-1 antibody (GAL1/1831).")
![Immunocytochemistry/Immunofluorescence: Galectin-1 Antibody (GAL1/1831) [NBP2-53212] - Confocal immunofluorescence image of HeLa cells using Galectin-1 Antibody (GAL1/1831). Green (CF488) and Red Dot is used to label the nuclei Red.](http://images.novusbio.com/fullsize/Galectin-1-Antibody-GAL1-1831-Immunocytochemistry-Immunofluorescence-NBP2-53212-img0003.jpg)
![Immunohistochemistry-Paraffin: Galectin-1 Antibody (GAL1/1831) [NBP2-53212] - Formalin-fixed, paraffin-embedded Human Prostate Carcinoma stained with Galectin-1 Monoclonal Antibody (GAL1/1831).](http://images.novusbio.com/fullsize/Galectin-1-Antibody-GAL1-1831-Immunohistochemistry-Paraffin-NBP2-53212-img0001.jpg)
![Western Blot: Galectin-1 Antibody (GAL1/1831) [NBP2-53212] - Western Blot of HeLa, A431, K562 and 293 Cell Lysates using Galectin-1 Monoclonal Antibody (GAL1/1831).](http://images.novusbio.com/fullsize/Galectin-1-Antibody-GAL1-1831-Western-Blot-NBP2-53212-img0002.jpg)
![Western Blot: Galectin-1 Antibody (GAL1/1831) [NBP2-53212] - Western Blot Analysis of human HeLa cell lysate using Galectin-1 Antibody (GAL1/1831).](http://images.novusbio.com/fullsize/Galectin-1-Antibody-GAL1-1831-Western-Blot-NBP2-53212-img0005.jpg)
![Protein Array: Galectin-1 Antibody (GAL1/1831) [NBP2-53212] - Analysis of Protein Array containing more than 19,000 full-length human proteins using Galectin-1 Antibody (GAL1/1831). Z- and S- Score: The Z-score represents the strength of a signal that a monoclonal antibody (MAb) (in combination with a fluorescently-tagged anti-IgG secondary antibody) produces when binding to a particular protein on the HuProt(TM) array. Z-scores are described in units of standard deviations (SD's) above the mean value of all signals generated on that array. If targets on HuProt(TM) are arranged in descending order of the Z-score, the S-score is the difference (also in units of SD's) between the Z-score. S-score therefore represents the relative target specificity of a MAb to its intended target. A MAb is considered to specific to its intended target, if the MAb has an S-score of at least 2.5.](http://images.novusbio.com/fullsize/Galectin-1-Antibody-GAL1-1831-Protein-Array-NBP2-53212-img0004.jpg)
![N/A Reg3A [Biotin]](http://images.novusbio.com/fullsize2/DATA_Reg3A_DY594005_ELISA_2483.jpg "N/A Reg3A [Biotin]")
![N/A NCAM-1/CD56 [Biotin]](http://images.novusbio.com/fullsize2/DATA_NCAM1_DY2408_ELISA_1823.jpg "N/A NCAM-1/CD56 [Biotin]")
