SKU: 19990083943

EasyStep Human T4 (Thyroxine) ELISA Kit

Sale price$495.45 Regular price$550.50
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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Description

EasyStep Human T4 (Thyroxine) ELISA KitThis assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre coated with Human T4 antigen, and the Human T4 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 T4 to each microplate well and

This assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with Human T4 antigen, and the Human T4 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 T4 to each microplate well and incubated . After TMB substrate solution is added, 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 T4 in the samples is then determined by comparing the OD of the samples to the standard curve.

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SKU: 19990083943

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Tasha U
Pawtucket, US
★★★★★ 5
Good quality dog ball for playing fetch
Size: Medium
My dog and family love these chuck it balls to play fetch with our dog. They are durable and fun. They squeak which is added fun for any dog! Regular tennis balls my dog chews apart and they get pretty gross after playing and being left outside. These can be easily washed off and cleaned. These balls last! Would recommend to anyone with a dog and would purchase again.
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Reviewed in the United States on April 17, 2025
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ryan johnson
Pawtucket, US
★★★★★ 5
Tough and sturdy
Size: Medium
Have lasted my dog for years now and she is a tough chewer. Worth the money
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Reviewed in the United States on December 12, 2025
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Gus
Port Orchard, US
★★★★★ 5
Heavy chewer approved.
Style: Ball, Size: Medium (Pack of 1)
My pomsky will destroy a toy in minutes. Ropes, and the "indestructible" nylon type stuffs are no match for my furry shark. This ball has stood up to him like David. He loves the crunch and it is so much more tolerable than a squeaker. These will be a staple in his toy box - Chuckit toys are really the most durable dog toys I have found in three years.
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Reviewed in the United States on April 26, 2026
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Gold Coast
Omaha, US
★★★★★ 5
Fun Ball
Style: Ball, Size: Medium (Pack of 2)
Great new ball for our pup. He loves the sound of the crunch!
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Reviewed in the United States on May 25, 2026
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Cheryl
Alexandria, US
★★★★★ 5
Durability
Style: Ball, Size: Medium (Pack of 2)
My dog loves these balls!
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Reviewed in the United States on May 25, 2026

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