ORM1 ELISA Kit (Orosomucoid 1)

Details for Product ORM1 ELISA Kit No. ABIN612705, Supplier: Log in to see
  • AGP-A
  • AGP1
  • ORM
  • AGP
  • Agpa1
  • OMD
  • Orm
  • Agp-1
  • Agp-2
  • Orm-1
  • orosomucoid 1
  • orosomucoid 1 (ovoglycoprotein)
  • ORM1
  • Orm1
Kits with alternative reactivity to:
Method Type
Competition ELISA
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Supplier Product No.
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Purpose The AssayMax Human AGP ELISA (Enzyme-Linked Immunosorbent Assay) kit employs a quantitative competitive enzyme immunoassay technique that measures human plasma and serum, AGP
Brand AssayMax
Sample Type Plasma
Analytical Method Quantitative
Detection Method Colorimetric
Components Human AGP Microplate: A 96 well polystyrene microplate (12 strips of 8 wells) coated with a polyclonal antibody against human AGP. Sealing Tapes: Each kit contains 3 pre-cut, pressure-sensitive sealing tapes that can be cut to fit the format of the individual assay. Human AGP Standard: Human AGP in a buffered protein base (4 µg, lyophilized). Biotinylated AGP: 1 vial, lyophilized. MIx Diluent Concentrate (10x): A 10-fold concentrated buffered protein base (30 ml). Wash Buffer Concentrate (20x): A 20-fold concentrated buffered surfactant (30 ml). Streptavidin-Peroxidase Conjugate (SP Conjugate): A 100-fold concentrate (90µl). 1 Chromogen Substrate: A ready-to-use stabilized peroxidase chromogen substrate tetramethylbenzidine (8 ml). Stop Solution: A 0.5 N hydrochloric acid to stop the chromogen substrate reaction (12 ml).
Material not included Microplate reader capable of measuring absorbance at 450 nm. Pipettes (1-20 µL, 20-200 µL, 200-1000µLand multiple channel). Deionized or distilled reagent grade water
Plasmids, Primers & others Plasmids, Primers & others ORM1 products on genomics-online (e.g. as negative or positive controls)
Alternative Name alpha-1-Acid Glycoprotein (ORM1 ELISA Kit Abstract)
Background Alpha-1-Acid Glycoprotein (AGP) is an acute-phase protein secreted by the liver which under conditions of inflammation increase several-fold in concentration. An elevated serum level of acute-phase inflammatory markers is associated with an increased risk of cardiovascular disease Urinary orosomucoid excretion rate predicts cardiovascular mortality in patients with Type II diabetes. AGP can be used as a marker for inflammation , chronic alcohol drinking , chronic kidney disease , and asthma.
Pathways Response to Growth Hormone Stimulus
Sample Volume 25 μL
Assay Time < 3 h
Plate Pre-coated
Protocol A polyconal antibody specific for human AGP has been pre- coated onto a 96-well microplate with removable strips. AGP in standards and samples is competed by a biotinylated AGP sandwiched by the immobilized antibody and streptavidin- peroxidase conjugate. All unbound material is then washed away and a peroxidase enzyme substrate is added. The color development is stopped and the intensity of the color is measured.
Reagent Preparation

Freshly dilute all reagents and bring all reagents to room temperature before use. If crystals have formed in the concentrate, mix gently until the crystals have completely dissolved. MIx Diluent Concentrate (10x): Dilute the MIx Diluent 1:10 with reagent grade water. Store for up to 1 month at 2-8°C. Standard Curve: Reconstitute the 4 g of AGP Standard with 1 ml of MIx Diluent to generate a solution of 4 g/ml. Allow the standard to sit for 10 minutes with gentle agitation prior to making dilutions. Prepare triplicate standard points by serially diluting the standard solution (4 g/ml) 1:2 with MIx Diluent to produce 2, 1, 0.5, 0.25, 0.125 and 0.063 g/ml solutions. MIx Diluent serves as the zero standard (0 g/ml). Any remaining solution should be frozen at -20°C. Standard Point Dilution [AGP] ( g/ml) P1 4.000 Standard (4 g/ml) P2 1 part P1 + 1 parts MIx Diluent 2.000 P3 1 part P2 + 1 parts MIx Diluent 1.000 P4 1 part P3 + 1 parts MIx Diluent 0.500 P5 1 part P4 + 1 parts MIx Diluent 0.250 P6 1 part P5 + 1 parts MIx Diluent 0.125 P7 1 part P6 + 1 parts MIx Diluent 0.063 P8 MIx Diluent 0.000 Biotinylated AGP (8x): Dilute Biotinylated AGP with 4 ml MIx Diluent to produce a 8-fold stock solution. Allow the biotin to sit for 10 minutes with gentle agitation prior to making dilutions. The stock solution should be further diluted 1:8 with MIx Diluent. Any remaining solution should be frozen at -20°C. Wash Buffer Concentrate (20x): Dilute the Wash Buffer Concentrate 1:20 with reagent grade water. SP Conjugate (100x): Spin down the SP Conjugate briefly and dilute the desired amount of the conjugate 1:100 with MIx Diluent. Any remaining solution should be frozen at -20°C.

Sample Collection Plasma: Collect plasma using one-tenth volume of 0.1 M sodium citrate as an anticoagulant. Centrifuge samples at 2000 x g for 10 minutes and assay. Dilute samples 1:1000 into MIx Diluent. The undiluted samples can be stored at -20°C or below for up to 3 months. Avoid repeated freeze-thaw cycles. (EDTA or Heparin can also be used as anticoagulant.) Serum: Samples should be collected into a serum separator tube. After clot formation, centrifuge samples at 2000 x g for 10 minutes. Remove serum and assay. Dilute samples 1:1000 into MIx Diluent. The undiluted samples can be stored at -20°C or below for up to 3 months. Avoid repeated freeze-thaw cycles.
Assay Procedure

Prepare all reagents, working standards and samples as instructed. Bring all reagents to room temperature before use. The assay is performed at room temperature (20 - 30 °C). Remove excess microplate strips from the plate frame and return them immediately to the foil pouch with desiccant inside. Reseal the pouch securely to minimize exposure to water vapor and store in a vacuum desiccator. Add 25 µL of standard or sample per well, and immediately add 25 µL of Biotinylated AGP to each well (on top of the Standard or sample) and mix gently. Cover wells with a sealing tape and incubate for two hours. Start the timer after the last sample addition. Wash five times with 200 µL of Wash Buffer. Invert the plate and decant the contents, and hit it 4-5 times on absorbent paper towel to complete remove liquid at each step. Add 50 µL of Streptavidin-Peroxidase Conjugate to each well and incubate for 30 minutes. Turn on the microplate reader and set up the program in advance. Wash five times with 200 µL of Wash Buffer. Add 50 µL of Chromogen Substrate per well and incubate for 10 minutes or till the optimal blue color density develops. Gently tap plate to ensure thorough mixing and break the bubbles in the well with pipette tip. Add 50 µL of Stop Solution to each well. The color will change from blue to yellow. Read the absorbance on a microplate reader at a wavelength of 450 nm immediately. Please note that after the reaction is stopped for about 10 minutes, some black particles may be generated at high concentration point, which will reduce the readings.

Calculation of Results

Calculate the mean value of the triplicate readings for each standard and sample. To generate a Standard Curve, plot the graph using the standard concentrations on the x-axis and the corresponding mean 450 nm absorbance on the y-axis. The best-fit line can be determined by regression analysis using log-log or four-parameter logistic curve-fit. Determine the unknown sample concentration from the Standard Curve and multiply the value by the dilution factor. Standard Curve The curve is provided for illustration only. A standard curve should be generated each time the assay is performed.

Restrictions For Research Use only
Handling Advice The kit should not be used beyond the expiration date.
Storage 4 °C/-20 °C
Storage Comment Store kit at 2-8°C or -20°C upon arrival up to the expiration date. Opened MIx Diluent may be stored for up to 1 month at 2-8°C. Store reconstituted reagents at -20°C or below. Opened unused strip wells may return to the foil pouch with the desiccant pack, reseal along zip-seal. May be stored for up to 1 month in a vacuum desiccator.
Supplier Images
ELISA image for Orosomucoid 1 (ORM1) ELISA Kit (ABIN612705) Orosomucoid 1 (ORM1) ELISA Kit
Product cited in: Wrześniak, Kepinska, Królik, Milnerowicz: "The Influence of Tobacco Smoke on Protein and Metal Levels in the Serum of Women during Pregnancy." in: PLoS ONE, Vol. 11, Issue 8, pp. e0161342, 2016 (PubMed).

Background publications Magid, Guldager, Hesse, Christiansen: "Monitoring urinary orosomucoid in acute inflammation: observations on urinary excretion of orosomucoid, albumin, alpha1-microglobulin, and IgG." in: Clinical chemistry, Vol. 51, Issue 11, pp. 2052-8, 2005 (PubMed).

Christiansen, Hommel, Magid, Feldt-Rasmussen: "Orosomucoid in urine predicts cardiovascular and over-all mortality in patients with Type II diabetes." in: Diabetologia, Vol. 45, Issue 1, pp. 115-20, 2002 (PubMed).

Tsutsumi, Takase: "Usefulness of microheterogeneity of serum alpha 1-acidglycoprotein as a marker for alcohol abuse." in: Alcohol (Fayetteville, N.Y.), Vol. 25, Issue 3, pp. 181-4, 2002 (PubMed).

Fournier, Medjoubi-N, Porquet: "Alpha-1-acid glycoprotein." in: Biochimica et biophysica acta, Vol. 1482, Issue 1-2, pp. 157-71, 2000 (PubMed).

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