EasyStep Human CEA (Carcinoembryonic Antigen) ELISA Kit
SKU: 8287075646

EasyStep Human CEA (Carcinoembryonic Antigen) ELISA Kit

Sale price$267.75 Regular price$297.50
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Description

EasyStep Human CEA (Carcinoembryonic Antigen) ELISA KitEach EasyStep ELISA kit comes with two extra strips of coated wells to run for standard curves ensuring you have more wells for your samples. The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre coated with an antibody specific to Human CEA, and the Human CEA standard plate wells that pre coated using protein related techniques are provided separately. Standard Sample Diluent

Each EasyStep ELISA kit comes with two extra strips of coated wells to run for standard curves ensuring you have more wells for your samples. 

The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Human CEA, and the Human CEA standard plate wells that pre-coated using protein-related techniques are provided separately. Standard/Sample Diluent Buffer or samples are added to the appropriate microtiter plate wells ,then added a HRP-conjugated antibody specific to Human CEA. After TMB substrate solution is added, only those wells that contain Human CEA and HRP-conjugated antibody will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Human CEA in the samples is then determined by comparing the OD of the samples to the standard curve.

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SKU: 8287075646

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Tchorton
Cuba, US
★★★★★ 5
Longest lasting dog toys we’ve purchased.
Style: Fox, Raccoon, Squirrel
In 2020, we purchased these for our 6 month old puppy who was repeatedly destroying all of her toys. Christmas 2025, I gifted our dog a stuffed toy purchased from a local dog store. It was destroyed within an hour. Later that day, I found one of these little squirrels that we purchased FIVE years ago - still in action, a bit worse for the wear, but still very much loved by our dog. I decided to purchase another pack of these as they are clearly winners.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026
M
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MISS JENNIFER TAYLOR
Lexington, US
★★★★★ 5
Nice toy
Style: Variety Pack - Large (3-pack)
Good idea, no stuffing.
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Reviewed in the United States on May 9, 2026
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Verified Purchase
J. Rothenberger
Alexandria, US
★★★★★ 3
The Ad got me, the reality didn't
Style: Variety Pack - Large (3-pack)
Directly from the ad- "Exclusive Noisemakers - Each large toy includes 3 high-quality round squeakers to deliver more sound to keep your best friend entertained.". Now my neighbor bought this squirrel with three high-quality squeakers nearly a year ago. It's ragged and tattered I just recently sewed it up for him where he chewed the one leg odd, but those three noise makers are still squeaking. Whe I got my pup, I immediately went to buy one and they were no longer selling them, so I've been on a search for one or an equivalent. These are not. There's no stuffing to get all over the place when your pup breaks into it, a plus. However the squeakers weren't particularly loud and were silenced in a few hours. Two were dead and the remaining one was very well on its way. The toy itself was pretty much intact but that had more to do with the lack of attention from the dog than how rugged the toy is. He'll pick it up once in a while but it certainly didn't meet my expectations. The good thing is that there are three of them so I can give him some brief excitement in the future. Wouldn't buy again.
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Reviewed in the United States on February 24, 2023
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Eileen
Los Angeles, US
★★★★★ 5
Strong Chewer Friendly Toy
Style: Variety Pack - Large (3-pack)
My dog is a rough chewer and these last a really long time (clearly since this beaver's face is long gone! The no stuffing is a win too for cleaning up afterwards.
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Reviewed in the United States on April 26, 2026
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Craig Curran
Louisville, US
★★★★★ 5
Longest living toy ever!
Style: Variety Pack - Large (3-pack), Style: Variety Pack - Large (3-pack)
This review is 2 years in the making! Purchased over 2 years ago, all three are still in active play, still squeek, with no holes.
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Reviewed in the United States on May 18, 2026

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