SKU: 76030153273

EasyStep Human PSA (Prostate Specific Antigen) ELISA Kit

Sale price$267.75 Regular price$297.50
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

EasyStep Human PSA (Prostate Specific 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 PSA, and the Human PSA 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 PSA, and the Human PSA 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 PSA. After TMB substrate solution is added, only those wells that contain Human PSA 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 PSA in the samples is then determined by comparing the OD of the samples to the standard curve.

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SKU: 76030153273

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4.3 ★★★★★
Based on 14 reviews
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Lisa J
Whiting, US
★★★★★ 4
Squeaker short-lived, enjoyment long-lasting
Size: Large, Color: 5 Pack
My 10-pound dorkie rips out the squeakers in about 30 minutes. I wish they were sturdier or the parts of the toy housing the squeaker were reinforced. However, he is so excited to get a new one and will continue to play with it even when the squeaker is out. He loves to play tug. They do get pretty gross from the chewing and definitely benefit from a trip through the washer. While this is not a very sturdy toy it provides so much entertainment I had to give it four stars.
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Reviewed in the United States on March 31, 2026
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Verified Purchase
Deborah
Chelsea, US
★★★★★ 5
Pups are happy!
Size: Large, Color: 5 Pack
Our dogs love these toys! What a great find! We will be buying different ones.
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Reviewed in the United States on June 7, 2026
S
Verified Purchase
Steve Hall
Omaha, US
★★★★★ 5
Husky Approved
Size: Large, Color: 5 Pack
Okay, so my husky, bless his cotton socks, thinks he's a furry little demolition crew. Usually, plush toys last about five minutes before they're disemboweled, leaving a fluffy white crime scene all over my living room. BUT! These Sharlovy toys are a game changer! They're stuffing-free, which is a HUGE win for my sanity (and my vacuum cleaner). He can happily gnaw away, trying to get to that squeaker (and succeeding, eventually, because, husky), but without the usual explosion of fluff. Five stars for saving me from a lifetime of stuffing-related stress. If you have a chewer, give these a try. Your house (and your head) will thank you.
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Reviewed in the United States on May 21, 2026
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Verified Purchase
ELJ
Fort Morgan, US
★★★★★ 3
not durable.
Size: Large, Color: 5 Pack
My dog devoured these in 60 seconds - completely shredded
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Reviewed in the United States on April 8, 2026
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Amy Fulgham
West Palm Beach, US
★★★★★ 5
No Mess, Lots of Fun!
Size: Large, Color: 5 Pack
My dog absolutely loves these toys! The squeakers and crinkle sounds keep him entertained for hours, and I appreciate that they have no stuffing—so no messy cleanup when he plays a little rough. The variety pack is great because it gives him different animals to choose from, and the toys are surprisingly durable even with lots of chewing. They’re lightweight, easy for him to carry around, and perfect for playtime or keeping him busy when I’m working. Definitely a great value for the price, and I’ll be buying again when he wears them out. Highly recommend!
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Reviewed in the United States on August 21, 2025

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