SKU: 3349200611

Human SFRP4 (secreted frizzled-related protein 4) ELISA Kit

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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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Description

Human SFRP4 (secreted frizzled-related protein 4) ELISA KitThe Human SFRP4 (secreted frizzled related protein 4) ELISA immunoassay kit uses the Sandwich ELISA principle. The micro ELISA plate provided in this kit has been pre coated with an antibody specific to Human SFRP4. Standards or samples are added to the micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human SFRP4 and Avidin Horseradish Peroxidase (HRP) conjugate are added successively

The Human SFRP4 (secreted frizzled-related protein 4) ELISA immunoassay kit uses the Sandwich-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Human SFRP4. Standards or samples are added to the micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human SFRP4 and Avidin-Horseradish Peroxidase (HRP) conjugate are added successively to each micro plate well and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Human SFRP4, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Human SFRP4. You can calculate the concentration of Human SFRP4 in the samples by comparing the OD of the samples to the standard curve.

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SKU: 3349200611

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Fort Morgan, US
★★★★★ 5
Talking Book
Format: Board book
Our Grandson loves his book!!
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Reviewed in the United States on April 13, 2023
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Mely
Phoenix, US
★★★★★ 3
Low volume
Format: Board book
Sounds can barely be heard.
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Reviewed in the United States on May 18, 2026
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Sally
Lexington, US
★★★★★ 4
One year old loved the animal sounds
Format: Board book
It only took a few moments for our grandchild to figure out this book. He had a big grin on his face listening to the realistic sounds.
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Reviewed in the United States on December 30, 2025
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denabo
Louisville, US
★★★★★ 3
Dead batteries
Format: Board book
The book itself is nice but it came with dead batteries. Now I have to buy and replace the batteries before I can give it as a gift to a toddler who loves pushing the buttons. If not for that, would have given it 5 stars. But the inconvenience of finding the batteries in the first place when I shouldn’t have to is extremely annoying.
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Reviewed in the United States on April 8, 2025
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Claribel
Louisville, US
★★★★★ 5
Such a fun toddler book!
Format: Board book
Bought this for y 2 year old nephew who loves Cars. We needed an alternative to a tablet or phone for outings. He loves this book, bright fun pictures, durable for a toddler, and great sounds.
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Reviewed in the United States on May 15, 2026

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