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Description
Rat ALB ELISA KitProduct Specification Usage Experimental equipment required for the experiment: 1. Microplate reader (450nm) 2. High precision pipette and gun tips: 0. 5 10uL, 5 50uL, 20 200uL, 200 1000uL 3. 37 constant temperature box 4. Distilled water or deionized water Sample processing and requirements: Serum: Place the whole blood sample collected in the serum separation tube at room temperature for 2 hours or at 4 overnight, then centrifuge at 1000g for 20
Product Specification
| Usage |
Experimental equipment required for the experiment: 1. Microplate reader (450nm) 2. High-precision pipette and gun tips: 0.5-10uL, 5-50uL, 20-200uL, 200-1000uL 3. 37℃ constant temperature box 4. Distilled water or deionized water Sample processing and requirements: Serum: Place the whole blood sample collected in the serum separation tube at room temperature for 2 hours or at 4℃ overnight, then centrifuge at 1000×g for 20 minutes, and take the supernatant, or store the supernatant at -20℃ or -80℃, but avoid repeated freezing and thawing. Plasma: Collect specimens using EDTA or heparin as anticoagulants and centrifuge them at 1000×g for 15 minutes at 2-8℃ within 30 minutes of collection. The supernatant can be tested or stored at -20℃ or -80℃, but repeated freezing and thawing should be avoided. Other biological fluids: Centrifuge at 1000xg for 20 minutes, remove the supernatant, and test. Pre-test preparation: 1. Remove the test kit from the refrigerator 10 minutes in advance and equilibrate to room temperature. 2. Prepare the standard gradient working solution: Add 1 mL of universal diluent to the lyophilized standard, let it stand for 15 minutes to completely dissolve, then gently mix (concentration is 20 ng/mL). Then dilute to the following concentrations: 20 ng/mL, 10 ng/mL, 5 ng/mL, 2.5 ng/mL, 1.25 ng/mL, 0.625 ng/mL, 0.3125 ng/mL, and 0 ng/mL. Serial dilution method: Take 7 EP tubes and add 500 μL of universal diluent to each tube. Pipette 500 μL of the 20 ng/mL standard working solution into the first EP tube and mix thoroughly to make a 10 ng/mL standard working solution. Repeat this procedure for subsequent tubes. The last tube serves directly as a blank well; there is no need to aspirate the liquid from the penultimate tube. See the figure below for details. 3. Preparation of Biotinylated Antibody Working Solution: 15 minutes before use, centrifuge the concentrated biotinylated antibody at 1000×g for 1 minute. Dilute the 100× concentrated biotinylated antibody to a 1× working concentration using universal diluent (e.g., 10µL concentrate + 990µL universal diluent). Prepare immediately before use. 4. Prepare the enzyme conjugate working solution: 15 minutes before use, centrifuge the 100× concentrated enzyme conjugate at 1000×g for 1 minute. Dilute the 100× concentrated HRP enzyme conjugate to a 1× working concentration with universal diluent (e.g., 10 μL of concentrate + 990 μL of universal diluent). Prepare immediately. 5. Prepare the 1× wash solution: Dispense 10 mL of 20× wash solution into 190 mL of distilled water (concentrated wash solution removed from the refrigerator may crystallize; this is normal. Allow to stand at room temperature until the crystals have completely dissolved before preparing). Procedure: 1. Remove the desired strips from the aluminum foil bag after equilibration at room temperature for 10 minutes. Seal the remaining strips in a ziplock bag and return to 4°C. 2. Sample addition: Add 100 μL of sample or standard of varying concentrations to the corresponding wells. Add 100 μL of universal diluent to the blank wells. Cover with a film and incubate at 37°C for 60 minutes. (Recommendation: Dilute the sample to be tested at least 1-fold with universal diluent before adding it to the ELISA plate. This will reduce the impact of matrix effects on the test results. The sample concentration should be multiplied by the corresponding dilution factor when calculating the final sample concentration. It is recommended to run replicates for all test samples and standards.) 3. Add Biotinylated Antibody: Remove the ELISA plate and discard the liquid without washing. Add 100 μL of Biotinylated Antibody Working Solution directly to each well. Cover with a film and incubate at 37°C for 60 minutes. 4. Wash: Discard the liquid and add 300 μL of 1x Wash Solution to each well. Let stand for 1 minute, shake off the wash solution, and pat dry on absorbent paper. Repeat this process three times (a plate washer can also be used). 5. Add Enzyme Conjugate Working Solution: Add 100 μL of Enzyme Conjugate Working Solution to each well. Cover with a film and incubate at 37°C for 30 minutes. 6. Washing: Discard the liquid and wash the plate five times as in step 4. 7. Adding substrate: Add 90 μL of substrate (TMB) to each well, cover with a sealing film, and incubate at 37°C in the dark for 15 minutes. 8. Adding stop solution: Remove the ELISA plate and add 50 μL of stop solution directly to each well. Immediately measure the OD value of each well at a wavelength of 450 nm. Calculating experimental results: 1. Calculate the average OD value of the standard and sample replicates and subtract the OD value of the blank well as a correction factor. Plot the standard curve of the four-parameter logistic function on double-logarithmic graph paper, with concentration as the horizontal axis and OD value as the vertical axis. 2. If the sample OD value is higher than the upper limit of the standard curve, dilute the sample appropriately and retest. Multiply the sample concentration by the corresponding dilution factor. |
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| Theory | This kit uses a double-antibody sandwich enzyme-linked immunosorbent assay (ELISA). Sample, standard, biotin-labeled detection antibody, and HRP conjugate are sequentially added to microwells pre-coated with an albumin (ALB) capture antibody. After incubation and washing, the sample is developed using the substrate TMB. TMB is converted to blue by peroxidase (HRP) catalysis and to yellow by acid. The intensity of the color is positively correlated with the amount of albumin (ALB) in the sample. The absorbance (OD) is measured at 450 nm using a microplate reader to calculate the sample concentration. | |||||||||||||||||||||||||||||||||
| Source | Rat | |||||||||||||||||||||||||||||||||
| Synonym | Rat Albumin ELISA Kit | |||||||||||||||||||||||||||||||||
| Detection Type | Double antibody sandwich method | |||||||||||||||||||||||||||||||||
| Composition |
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| Background | Albumins are a family of globular proteins, the most common of which is serum albumin. All proteins in the albumin family are water-soluble, have moderate solubility in concentrated salt solutions, and undergo heat denaturation. Albumins are normally found in plasma and, unlike other blood proteins, are not glycosylated. Substances containing albumin are known as albumins. Several blood transport proteins are evolutionarily related to the albumin family, including serum albumin, alpha-fetoprotein, vitamin D-binding protein, and alfamine. | |||||||||||||||||||||||||||||||||
| General Notes | 1. Strictly adhere to the specified incubation time and temperature to ensure accurate results. All reagents must be at room temperature (20-25°C) before use. Refrigerate reagents immediately after use. 2. Improper plate washing may result in inaccurate results. Ensure that all liquid in the wells is aspirated thoroughly before adding substrate. Do not allow the wells to dry out during incubation. 3. Remove any residual liquid and fingerprints from the bottom of the plate, as this will affect the OD value. 4. The substrate developer solution should be colorless or very light in color. Do not use substrate solution that has turned blue. 5. Avoid cross-contamination of reagents and specimens to prevent erroneous results. 6. Avoid direct exposure to strong light during storage and incubation. 7. Do not expose any reagents to bleaching solvents or the strong fumes emitted by bleaching solvents. Any bleaching agent will destroy the biological activity of the reagents in the kit. 8. Do not use expired products, and do not mix components with different product numbers and batches. 9. Recombinant proteins from sources other than the kit may not be compatible with the antibodies in this kit and will not be recognized. 10. If there is a possibility of disease transmission, all samples should be managed properly and samples and testing devices should be handled according to prescribed procedures. |
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| Storage Temp. | If the unopened kit is stored at 4°C, the shelf life is 6 months. | |||||||||||||||||||||||||||||||||
| Test Range | 0.312-20 ng/mL | |||||||||||||||||||||||||||||||||
| Applications | Serum, plasma, and other biological fluids |
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4.3 ★★★★★
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Product Reviews
★★★★★ 3
Not so much.
Size: 11 In X 14 In
I bought this paper for a photo I took and I needed 4 copies printed. I didn’t want to spend a lot of money so I bought this paper as it was fairly inexpensive. You get what you pay for. A professional photographer friend of mine printed my photos as he has a high end Epson printer. He mentioned to me when handing the prints to me that the quality of the print was average with this paper. The texture and feel of this paper is like a sheet of ordinary typing paper. I guess one could use this paper to print test sheets. I will not buy again.
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Reviewed in the United States on October 17, 2022
★★★★★ 5
WOW — Stunning Print Quality
Size: 8.5"X14", Size: 8.5"X14"
WOW WOW WOW. The print quality on this photo paper is absolutely amazing. The colors come out vibrant, sharp, and so professional-looking. I’ve tried quite a few photo papers, and this one is easily one of my favorites.
The paper itself feels high quality and sturdy, and the glossy finish really makes photos pop without looking cheap or overly shiny. It feeds smoothly through my printer and dries quickly with no smudging. Every print comes out crisp and clean.
If you’re looking for professional-level photo paper with incredible color payoff, this is it. Such a great value for the quality you get—I’ll definitely be repurchasing.
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Reviewed in the United States on January 23, 2026
★★★★★ 5
Great value glossy photo paper
Size: 5"X7"
This photo paper works really well with my inkjet printer using dye ink. The colors come out bright and sharp, and it dries quickly without smudging or smearing. The glossy finish gives the photos a clean, professional look, and the 180gsm weight makes it feel sturdy without jamming or being too thick for my printer.
So far, I’ve used it for family photos, thank you cards, and a few school projects. The results have been consistent, and I like that there’s no watermark on the back so I can write notes or dates if needed. The pack comes with 100 sheets, which makes it a great value for how well it performs. If you need affordable, good quality glossy paper for home printing, this is a dependable choice that makes projects look polished.
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Reviewed in the United States on September 27, 2025
★★★★★ 5
Photo paper
Size: 8.5"X11", Size: 8.5"X11"
Perfect for the crafting world I love these brand amazing quality and works perfectly with my printer I definitely will buy more and truly recommend it !!
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Exceptional Quality and Value!
Size: 8.5"X11"
I recently purchased the Koala Glossy Inkjet Photo Paper and I must say, I'm thoroughly impressed. The quality of this photo paper is outstanding, providing crisp, vibrant prints every time.
The 8.5x11 inch size is perfect for printing standard photos and the 48lb weight gives the paper a sturdy, high-quality feel. I've used it to print everything from family photos to professional presentations, and the results have been consistently excellent.
One of the things I appreciate most about this product is the quantity. With 100 sheets per pack, it offers great value for the price. I also found the paper to be well-packaged, ensuring it arrived in perfect condition.
In terms of compatibility, I've had no issues using this paper with my inkjet printer. The ink dries quickly, preventing smudges, and the glossy finish really makes the colors pop.
Overall, the Koala Glossy Inkjet Photo Paper has exceeded my expectations. I would highly recommend it to anyone in need of high-quality photo paper. It truly deserves a 5-star rating!
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Reviewed in the United States on December 30, 2023
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