SKU: 65821951340

EFNA4 (Ephrin A4) ELISA Kit (Small Sample)

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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

EFNA4 (Ephrin A4) ELISA Kit (Small Sample)The EFNA4 (Ephrin A4) ELISA Kit is a Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre coated with an antibody specific to Human EFNA4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin conjugated antibody specific to Human EFNA4. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only

The EFNA4 (Ephrin A4) ELISA Kit is a Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Human EFNA4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human EFNA4. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Human EFNA4, biotin-conjugated antibody and enzyme-conjugated Avidin 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 EFNA4 in the samples is then determined by comparing the OD of the samples to the standard curve.

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SKU: 65821951340

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4.1 ★★★★★
Based on 8 reviews
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Grace Duong
Louisville, US
★★★★★ 5
Invisible, Reliable, and Weirdly Satisfying
Model: Hydrocolloid, Size: 102 Count (Pack of 3)
I’ve tried a ton of different pimple patches and some fall off in the middle of the night, some look like you’ve taped a sticker to your face, and some just straight-up don’t work. These? These are my go-to. I wear them day and night, and I’ve literally forgotten I have one on because they’re that invisible. Even under makeup or in bright lighting, it’s hard to tell it’s there unless you’re seriously up close. They adhere well with no random peeling or slipping off and they stay put even through sleep or light face washing. That alone makes them worth it. But beyond just staying on, they do the job. After a few hours (or overnight), you can actually see the patch pulling oil and gunk out of the spot. It’s gross in the best way. I’ve had whiteheads flatten out and redness reduce without me ever touching the pimple. No popping, no scarring. If you’re the type who picks at your face out of habit that this helps break that cycle. Just slap one on and forget it. I’ve genuinely missed them before because they blend into my skin so well, even in the mirror.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2025
H
Verified Purchase
Hsu
New York, US
★★★★★ 5
Stay in place well
Works well for the acne
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
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Verified Purchase
Nikki Morrow
Chelsea, US
★★★★★ 5
Better than the well know brand
Model: Hydrocolloid, Size: 102 Count (Pack of 3)
Have purchased these numerous times. Works fast in removing impurities, pimples are usually gone by morning. Highly recommend. Better value than other name brands
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
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Verified Purchase
Rebecca
Fort Morgan, US
★★★★★ 4
Affordable
Model: Hydrocolloid, Size: 102 Count (Pack of 1)
These patches are a good value for the price and work as expected. They stick pretty well and are relatively discreet on the skin. They don’t perform miracles overnight, but they do help keep the area clean and protected. I usually notice improvement after a couple of days. My only real complaint is that I wish the small size was just a bit larger. Overall, solid and affordable option.
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Reviewed in the United States on February 26, 2026
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Verified Purchase
courtney
San Leandro, US
★★★★★ 5
INVISIBLE
Model: Hydrocolloid, Size: 102 Count (Pack of 1), Model: Hydrocolloid, Size: 102 Count (Pack of 1)
These are basically invisible so you can wear them during the day! And they actually work! Incredibly thin so I use tweezers to apply them. Have been so great for my hormonal acne during pregnancy. Highly recommend!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026

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