Human Albumin ELISA Kit, Fluorescent is a single-wash 90-min Simplestep used to quantify Human Albumin with a sensitivity of 0.26 ng/mL. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step.
- Fluorescent Sandwich ELISA - 530/570/590 nm readout : works on any standard plate reader
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Key facts
- Detection method
- Fluorescent
- Sample types
- Heparin Plasma, Citrate plasma, Cell culture supernatant, Serum, EDTA Plasma
- Assay type
- Sandwich (quantitative)
- Reactive species
- Human
- Range
- 0.39 - 100 ng/mL
- Assay time
- 1h 30m
- Sensitivity
- = 0.26 ng/mL
Reactivity data
| Application | Reactivity | Dilution info | Notes |
|---|---|---|---|
Application sELISA | Reactivity Reacts | Dilution info - | Notes - |
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Target data
Function
Binds water, Ca(2+), Na(+), K(+), fatty acids, hormones, bilirubin and drugs (Probable). Its main function is the regulation of the colloidal osmotic pressure of blood (Probable). Major zinc transporter in plasma, typically binds about 80% of all plasma zinc (PubMed:19021548). Major calcium and magnesium transporter in plasma, binds approximately 45% of circulating calcium and magnesium in plasma (By similarity). Potentially has more than two calcium-binding sites and might additionally bind calcium in a non-specific manner (By similarity). The shared binding site between zinc and calcium at residue Asp-273 suggests a crosstalk between zinc and calcium transport in the blood (By similarity). The rank order of affinity is zinc > calcium > magnesium (By similarity). Binds to the bacterial siderophore enterobactin and inhibits enterobactin-mediated iron uptake of E.coli from ferric transferrin, and may thereby limit the utilization of iron and growth of enteric bacteria such as E.coli (PubMed:6234017). Does not prevent iron uptake by the bacterial siderophore aerobactin (PubMed:6234017).
Alternative names
GIG20, GIG42, PRO0903, PRO1708, PRO2044, PRO2619, PRO2675, UNQ696/PRO1341, ALB, Albumin
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Recommended products
Human Albumin ELISA Kit, Fluorescent is a single-wash 90-min Simplestep used to quantify Human Albumin with a sensitivity of 0.26 ng/mL. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step.
- Fluorescent Sandwich ELISA - 530/570/590 nm readout : works on any standard plate reader
Key facts
- Detection method
- Fluorescent
- Sample types
- Heparin Plasma, Citrate plasma, Cell culture supernatant, Serum, EDTA Plasma
- Assay type
- Sandwich (quantitative)
- Reactive species
- Human
- Range
- 0.39 - 100 ng/mL
- Assay time
- 1h 30m
- Assay Platform
- Pre-coated microplate (12 x 8 well strips)
- Sensitivity
- = 0.26 ng/mL
Precision
Intra assay
| Sample | n | C.V. |
|---|---|---|
Sample Serum | n 8 | C.V. 5.2 |
Inter assay
| Sample | n | C.V. |
|---|---|---|
Sample Serum | n 3 | C.V. 7.6 |
Recovery
Sample specific recovery
| Sample type | Average % | Range |
|---|---|---|
Sample type Cell culture supernatant | Average % = 105 | Range 100 - 108 % |
Sample type Serum | Average % = 100 | Range 92 - 110 % |
Sample type EDTA Plasma | Average % = 104 | Range 97 - 109 % |
Sample type Heparin Plasma | Average % = 98 | Range 89 - 105 % |
Sample type Citrate plasma | Average % = 101 | Range 100 - 103 % |
Storage
- Shipped at conditions
- Blue Ice
- Appropriate short-term storage conditions
- +4°C
- Appropriate long-term storage conditions
- +4°C
- Storage information
- +4°C
Notes
Albumin in vitro CatchPoint SimpleStep ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of Albumin ;evels in human serum, plasma and cell culture supernatants.
This CatchPoint SimpleStep ELISA kit has been optimized for Molecular Devices Microplate Readers. Click here for a list of recommended Microplate Readers.
If using a Molecular Devices' plate reader supported by SoftMax® Pro software, a preconfigured protocol for these CatchPoint SimpleStep ELISA Kits is available with all the protocol and analysis settings at www.softmaxpro.org.
The CatchPoint SimpleStep ELISA employs an affinity tag labeled capture antibody and a reporter conjugated detector antibody which immunocapture the sample analyte in solution. This entire complex (capture antibody/analyte/detector antibody) is in turn immobilized via immunoaffinity of an anti-tag antibody coating the well. To perform the assay, samples or standards are added to the wells, followed by the antibody mix. After incubation, the wells are washed to remove unbound material. CatchPoint HRP Development Solution containing the Stoplight Red Substrate is added. During incubation, the substrate is catalyzed by HRP generating a fluorescent product. Signal is generated proportionally to the amount of bound analyte and the intensity is measured in a fluorescence plater reader at 530/570/590 nm Excitation/Cutoff/Emission.
Albumin (ALB), the main protein of plasma, has a good binding capacity for water, Ca2+, Na+, K+, fatty acids, hormones, bilirubin and drugs. Its main function is the regulation of the colloidal osmotic pressure of blood. It also serves as a major zinc transporter in plasma, typically binding about 80% of all plasma zinc.
Supplementary info
- This supplementary information is collated from multiple sources and compiled automatically.
- Activity summary
Albumin also known as ALB is a major plasma protein with a molecular mass of approximately 66.5 kDa. It predominantly gets synthesized in the liver and found abundantly in blood plasma. Albumin serves multiple functions including maintaining osmotic pressure and acting as a carrier protein for various endogenous substances like hormones fatty acids and bilirubin.
- Biological function summary
Albumin plays a critical role in transporting small molecules like metabolites and drugs through the circulatory system. It is not a part of any complex but functions independently to bind transport and release various ligands. Albumin's affinity for hydrophobic molecules makes it essential for they to be solubilized in blood for proper metabolism and excretion.
- Pathways
More than five binding sites on albumin facilitate its role in the fatty acid metabolism and renin-angiotensin system pathways. In fatty acid metabolism albumin interacts with transport proteins carrying fatty acids to tissues for energy production. Additionally during the renin-angiotensin system albumin modulates blood pressure through its interaction with angiotensin II which can influence vasoconstriction.
- Associated diseases and disorders
Researchers link albumin with nephrotic syndrome and liver cirrhosis. In nephrotic syndrome low levels of albumin (albumin low) can cause edema due to imbalanced osmotic pressure. In liver cirrhosis a reduction in albumin synthesis signifies liver damage. Albumin's interaction with proteins like angiotensin II correlates with complications such as hypertension further establishing the protein's role in health and disease contexts.
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2 product images
Sandwich ELISA - Human Albumin ELISA Kit, Fluorescent (ab229386)
Human Albumin standard curve comparison.
Standard Curve comparison between the original Human Albumin Catchpoint ELISA kit and current Human Albumin Catchpoint ELISA kit.
Sandwich ELISA - Human Albumin ELISA Kit, Fluorescent (ab229386)
Example of human Albumin standard curve in Sample Diluent NS.
The Albumin standard curve was prepared as described in Section 10. Raw data generated on SpectraMax M4 Multi-Mode Microplate Reader is shown in the table. Background-subtracted data values (mean +/- SD) are graphed.
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