Total Estrogen ELISA Kit
SKU: 13866410703

Total Estrogen ELISA Kit

Sale price$157.50 Regular price$175.00
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Ships within 48 hours ยท Estimated delivery Jul 7 - Jul 12

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Description

Total Estrogen ELISA KitThe Total Estrogens ELISA kit is a competitive ELISA to measure Total Estrogens in serum. Competition occurs between total estrogens (estrone, estradiol, and estriol) present in calibrators, controls, specimen samples and an enzyme labelled antigen (HRP conjugate) for a limited number of anti estrogen antibody binding sites on the microplate wells. After a washing step that removes unbound materials, the TMB substrate (enzyme substrate) is added which

The Total Estrogens ELISA kit is a competitive ELISA to measure Total Estrogens in serum. Competition occurs between total estrogens (estrone, estradiol, and estriol) present in calibrators, controls, specimen samples and an enzyme-labelled antigen (HRP conjugate) for a limited number of anti-estrogen antibody binding sites on the microplate wells. After a washing step that removes unbound materials, the TMB substrate (enzyme substrate) is added which reacts with HRP to form a blue-colored product that is inversely proportional to the amount of total estrogens present. Following an incubation, the enzymatic reaction is terminated by the addition of the stopping solution, converting the color from blue to yellow. The absorbance is measured on a microplate reader at 450 nm. A set of calibrators is used to plot a calibrator curve from which the amount of total estrogens in specimen samples and controls can be directly read.

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SKU: 13866410703

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4.7 โ˜…โ˜…โ˜…โ˜…โ˜…
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Richard H Harrison
Bozeman, US
โ˜…โ˜…โ˜…โ˜…โ˜… 5
Great toy to play fetch with the dogs.
Color: Black/White, Size: Large
These balls are a great dog toy to play fetch with your dogs. This not the first ball I have gotten for the dogs. Just the right size and weight for medium sized dogs. I have less concerns about them possibly choking on these soccer balls versus tennis balls. So I can leave them out for them to play with. The are easy to inflate using the included pump. My only concern is the durability of the straps as my dogs have almost torn off one the straps of the previous ball I purchased.
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Reviewed in the United States on May 2, 2026
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Kendall
Phoenix, US
โ˜…โ˜…โ˜…โ˜…โ˜… 5
Dog parents; buy this now!
Color: Black/White, Size: Medium
A must have for my pup! I have bought this at least 5 times. She eventually pops them and I need a new one. It's an amazing toy that she can thrash and we can play fetch with
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Reviewed in the United States on May 1, 2026
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Tricia Rees
Louisville, US
โ˜…โ˜…โ˜…โ˜…โ˜… 5
Westie LOVES this toy
Color: U.S.A, Size: Medium
My pup (Westie) adores this toy. This is actually our second one. The ball itself is resistant but the straps will be obliterated. Would definitely recommend! Totally worth the price!
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Reviewed in the United States on May 11, 2026
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regina
Cuba, US
โ˜…โ˜…โ˜…โ˜…โ˜… 3
Not durable
Color: Black/White, Size: Large
If you have a dog who likes to pop things then this toy isn't it. Within 5 min she had this ball popped. It was made to sound like it was durable for this type of thing but it definitely is not so just be aware. Now if you have a dog who doesn't pop things easy then this would be a good toy
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Reviewed in the United States on May 15, 2026
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Billie W
Los Angeles, US
โ˜…โ˜…โ˜…โ˜…โ˜… 5
They last quite well, even out in weather.
Color: Black/White, Size: Medium
NY corgi loves these!
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Reviewed in the United States on May 31, 2026

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