Osteopontin ELISA Kit

Catalog No. ABIN6974094

Product Details Osteopontin ELISA Kit

Target: Osteopontin (SPP1) (Secreted phosphoprotein 1 (SPP1))

Reactivity: Human

Detection Method: Colorimetric

Method Type: Sandwich ELISA

Detection Range: 0.78 ng/mL - 50 ng/mL

Minimum Detection Limit: 0.78 ng/mL

Application: ELISA

Purpose: For the quantitative determination of human osteopontin (OPN) concentrations in serum, plasma, urine, tissue homogenates.

Sample Type: Plasma, Serum, Tissue Homogenate, Urine

Analytical Method: Quantitative

Specificity: This assay has high sensitivity and excellent specificity for detection of human OPN. No significant cross-reactivity or interference between human OPN and analogues was observed. Note: Limited by current skills and knowledge, it is impossible for us to complete the cross-reactivity detection between human OPN and all the analogues, therefore, cross reaction may still exist.

Sensitivity: 0.195 ng/mL

Components:

• Assay plate
• Standard
• HRP-avidin (100 x concentrate)
• Biotin-antibody (100 x concentrate)
• Sample Diluent
• HRP-avidin Diluent
• Biotin-antibody Diluent
• Wash Buffer (25 x concentrate)
• TMB Substrate
• Stop Solution
• Adhesive Strip

Application Details

Application Notes: Optimal working dilution should be determined by the investigator.

Sample Volume: 100 μL

Assay Time: 1 - 4.5 h

Plate: Pre-coated

Protocol:

1. Prepare reagents, samples and standards as instructed.
2. Add 100 µL standard or sample to each well. Incubate 2 hours at 37 °C.
3. Remove the liquid of each well, don't wash.
4. Add 100 µL Biotin-antibody (1x) to each well. Incubate 1 hour at 37 °C.
5. Aspirate and wash 3 times.
6. Add 100 µL HRP-avidin (1x) to each well. Incubate 1 hour at 37 °C
7. Aspirate and wash 5 times.
8. Add 90 μL of TMB Substrate to each well. Incubate for 15-30 minutes at 37 °C. Protect from light.
9. Add 50 µL Stop Solution to each well. Read at 450 nm within 5 minutes.

Reagent Preparation:

1. Biotin-antibody (1x) - Centrifuge the vial before opening. Biotin-antibody requires a 100-fold dilution. A suggested 100-fold dilution is 10 μL of Biotin-antibody + 990 μL of Biotin-antibody Diluent.
2. HRP-avidin (1x) - Centrifuge the vial before opening. HRP-avidin requires a 100-fold dilution. A suggested 100-fold dilution is 10 μL of HRP-avidin + 990 μL of HRP-avidin Diluent.
3. Wash Buffer (1x) - If crystals have formed in the concentrate, warm up to room temperature and mix gently until the crystals have completely dissolved. Dilute 20 mL of Wash Buffer Concentrate (25 x) into deionized or distilled water to prepare 500 mL of Wash Buffer (1 x).
4. Standard Centrifuge the standard vial at 6000-10000rpm for 30s. Reconstitute the Standard with 1.0 mL of Sample Diluent. Do not substitute other diluents. This reconstitution produces a stock solution of 50 ng/mL. Mix the standard to ensure complete reconstitution and allow the standard to sit for a minimum of 15 minutes with gentle agitation prior to making dilutions. Pipette 250 μL of Sample Diluent into each tube (S0-S6). Use the stock solution to produce a 2-fold dilution series (below). Mix each tube thoroughly before the next transfer. The undiluted Standard serves as the high standard (50 ng/mL). Sample Diluent serves as the zero standard (0 ng/mL).

Note:

• Kindly use graduated containers to prepare the reagent. Please don't prepare the reagent directly in the Diluent vials provided in the kit.
• Bring all reagents to room temperature (18-25 °C) before use for 30 min.
• Prepare fresh standard for each assay. Use within 4 hours and discard after use.
• Making serial dilution in the wells directly is not permitted.
• Please carefully reconstitute Standards according to the instruction, and avoid foaming and mix gently until the crystals have completely dissolved. To minimize imprecision caused by pipetting, use small volumes and ensure that pipettors are calibrated. It is recommended to suck more than 10 μL for once pipetting.
• Distilled water is recommended to be used to make the preparation for reagents. Contaminated water or container for reagent preparation will influence the detection result.

Sample Preparation:

• It is recommended to use fresh samples without long storage, otherwise protein degradation and denaturationmay occur in these samples, leading to false results. Samples should therefore be stored for a short periodat 2 - 8 °C or aliquoted at -20 °C (≤1 month) or -80 °C (≤ 3 months). Repeated freeze-thawcycles should be avoided. Prior to assay, the frozen samples should be slowly thawed and centrifuged toremove precipitates.
• If the sample type is not specified in the instructions, a preliminary test is necessary to determinecompatibility with the kit.
• If a lysis buffer is used to prepare tissue homogenates or cell culture supernatant, there is a possibilityof causing a deviation due to the introduced chemical substance.The recommended dilution factor is for reference only.
• Please estimate the concentration of the samples before performing the test. If the values are not in therange of the standard curve, the optimal sample dilution for the particular experiment has to be determined.Samples should then be diluted with PBS (pH =7.0-7.2).

Note:

Recommend to dilute the serum or plasma samples with Sample Diluent (1:10) before test. The suggested 10-fold dilution can be achieved by adding 25 μL sample to 225 μL of Sample Diluent. Recommend to dilute the urine samples with Sample Diluent (1:500) before test. The suggested 500-fold dilution can be achieved by adding 5 μL sample to 95 μL of Sample Diluent first, then complete the 500-fold dilution by adding 10 μL of this solution to 240 μL of Sample Diluent. The recommended dilution factor is for reference only. The optimal dilution factor should be determined by users according to their particular experiments.

Assay Precision: Intra-assay Precision (Precision within an assay): CV%<8% Three samples of known concentration were tested twenty times on one plate to assess.
Inter-assay Precision (Precision between assays): CV%<10% Three samples of known concentration were tested in twenty assays to assess.

Restrictions: For Research Use only

Handling

Storage: 4 °C,-20 °C

Storage Comment: Unopened kit Store at 2 - 8°C. Do not use the kit beyond the expiration date May be stored for up to 1 month at 2 - 8°C. Coated assay Try to keep it in a sealed aluminum foil bag, plate and avoid the damp. Standard May be stored for up to 1 month at 2 - 8° C. If Biotin-antibody don't make recent use, better keep it store at HRP-avidin -20°C. Biotin-antibody Diluent Opened kit HRP-avidin Diluent Sample May be stored for up to 1 month at 2 - 8°C. Diluent Wash Buffer TMB Substrate Stop Solution *Provided this is within the expiration date of the kit.

Expiry Date: 6 months

References for Osteopontin ELISA Kit (ABIN6974094)

Robati, Partovi-Kia, Sadat-Amini, Haghighatkhah, Younespour, Toossi: "Serum osteopontin level and common carotid artery intima-media wall thickness in psoriasis." in: International journal of dermatology, Vol. 55, Issue 5, pp. e262-7, (2017) (PubMed).

Toossi, Sadat Amini, Sadat Amini, Partovi Kia, Enamzade, Kazeminejad, Esmaeily Radvar, Younespour: "Assessment of serum levels of osteopontin, selenium and prolactin in patients with psoriasis compared with healthy controls, and their association with psoriasis severity." in: Clinical and experimental dermatology, (2015) (PubMed).

Wei, Huang, Tan, Chen, Chen, Deng: "Serum osteopontin levels in relation to bone mineral density and bone turnover markers in postmenopausal women." in: Scandinavian journal of clinical and laboratory investigation, pp. 1-7, (2015) (PubMed).

Wei, Wang, Wang, Fang, Zhou, Tan, He, Deng: "Combination treatment with whole body vibration and a kidney-tonifying herbal Fufang prevent osteoporosis in ovariectomized rats." in: Orthopaedic surgery, Vol. 7, Issue 1, pp. 57-65, (2015) (PubMed).

Motegi, Yokoyama, Ogino, Yamada, Uchiyama, Takeuchi, Ohnishi, Ishikawa: "Pathogenesis of Multiple Lentigines in LEOPARD Syndrome with PTPN11 Gene Mutation." in: Acta dermato-venereologica, (2015) (PubMed).

Manaka, Tanabe, Kariya, Naito, Takayama, Nagao, Liu, Ito, Maeno, Suzuki, Miyazaki: "Low-intensity pulsed ultrasound-induced ATP increases bone formation via the P2X7 receptor in osteoblast-like MC3T3-E1 cells." in: FEBS letters, Vol. 589, Issue 3, pp. 310-8, (2015) (PubMed).

Fouad, Esmat, Omran, Rashid, Kobaisi: "Noninvasive assessment of hepatic fibrosis in Egyptian patients with chronic hepatitis C virus infection." in: World journal of gastroenterology, Vol. 18, Issue 23, pp. 2988-94, (2013) (PubMed).

Target Details for Osteopontin

Target: Osteopontin (SPP1) (Secreted phosphoprotein 1 (SPP1))

Alternative Name: secreted phosphoprotein 1 (SPP1 Products)

Synonyms: BNSP ELISA Kit, BSPI ELISA Kit, ETA-1 ELISA Kit, OPN ELISA Kit, 2AR ELISA Kit, Apl-1 ELISA Kit, Bsp ELISA Kit, Eta ELISA Kit, OP ELISA Kit, Opn ELISA Kit, Opnl ELISA Kit, Ric ELISA Kit, Spp-1 ELISA Kit, OSP ELISA Kit, zgc:111821 ELISA Kit, secreted phosphoprotein 1 ELISA Kit, SPP1 ELISA Kit, Spp1 ELISA Kit, spp1 ELISA Kit

Background:

Abbreviation: OPN

Alias: BNSP, BSPI, ETA-1, MGC110940, OPN, SPP1/CALPHA1 fusion|bone sialoprotein I|early T-lymphocyte activation 1|osteopontin|osteopontin/immunoglobulin alpha 1 heavy chain constant region fusion protein|s

UniProt: P10451

Pathways: Regulation of Cell Size