SKU: 32534824979

E2 (Estradiol) ELISA Kit

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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

E2 (Estradiol) ELISA KitThe E2 (Estradiol) ELISA Kit measures E2 in Universal Serum, Plasma, Cell Culture Supernatant, Cell or Tissue Lysate. This kit is based on Competitive ELISA detection method and takes 2h assay time. The microplate provided in this kit has been precoated with anti E2 antibody. Sample or standard completely mixes with fixed amount of biotin labeled E2 working solution and also add into each well. E2 in the sample or standard competes with biotin labeled

The E2 (Estradiol) ELISA Kit measures E2 in Universal Serum, Plasma, Cell Culture Supernatant, Cell or Tissue Lysate. This kit is based on Competitive-ELISA detection method and takes 2h assay time. The microplate provided in this kit has been precoated with anti E2 antibody. Sample or standard completely mixes with fixed amount of biotin-labeled E2 working solution and also add into each well. E2 in the sample or standard competes with biotin-labeled E2 to bind with antibody precoated on the microplate. Free components are washed off. After adding HRP-Streptavidin Conjugate (SABC), wash off unbound conjugate. Add TMB substrate solution. Then, TMB was catalyzed by HRP to produce a blue color product that turned yellow after adding a stop solution. Read the O.D. absorbance at 450nm in a microplate reader. Compare OD450 value of sample with the standard curve through curve fitting software to determine the concentration of E2 in the sample. The concentration of the target substance is inversely proportional to the OD450 value.

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SKU: 32534824979

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4.9 ★★★★★
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Mary Freeman
West Palm Beach, US
★★★★★ 5
amazing
Color: Large Set of 4
good buy worked well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
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Verified Purchase
Steve
Phoenix, US
★★★★★ 4
3.5, Not 3.0
Color: Medium Set of 6
These balls were almost exactly what I needed. I was replacing my boy’s favorite ball, which is the 3” squeaky, spikey ball that fits in the chuck it launcher. Unfortunately I saw the shiny object next to it and because there were SIX balls and a dollar less, I failed to see that these are 3.5” balls instead of 3”…. Great balls but no fitty in the slingy. Buyer beware. No chuck it no problem. Save a buck.
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Reviewed in the United States on March 9, 2026
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Verified Purchase
HollisHoHo
Massapequa, US
★★★★★ 5
MY CHIHUAHUA LOVES THESE BALLS!!
Color: Samll Set of 8
My little chihuahua, BamBam, is addicted to balls, especially little balls that squeak! However, any balls that have material on them, BamBam will tear them apart, swallow the material and then get an upset tummy! These balls saved the day! BamBam LOVES them & she cannot tear them apart! They hold up so well! No matter how much BamBam plays with them, they keep squeaking away!
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Reviewed in the United States on July 15, 2025
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Verified Purchase
Laurens springerslng
Birmingham, US
★★★★★ 5
Great thick squeaky ball
Color: Large Set of 2
These are good thick rubbery squeaky balls. My boy loves them! He's 75lbs. Strong chewer. I hav hard time squeezing to squeak, but he doesn't... He loves it!!!
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Reviewed in the United States on March 24, 2026
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g a ross
Natrona Heights, US
★★★★★ 5
Squeaky ball
Color: Large Set of 4
Perfect squeaky ball. Dogs love them. I love that they're durable and their thickness aids their durability. My Great Dane will play alone for hours with a ball.
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Reviewed in the United States on June 20, 2025

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