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Lab antigens are crucial components in various research and diagnostic applications, from vaccine development to disease detection. Selecting the correct antigen ensures the accuracy and reliability of your experimental results. This guide will help you navigate the key factors to consider when purchasing these vital biological reagents.
Optimized for Laboratory Use: Citrate solution (antigen retriever) is a commonly used antigen retriever, which can be used for antigen retrieval of paraffin-embedded sections and frozen sections fixed with formaldehyde, paraformaldehyde, or other aldehyde...
Features: It can effectively remove cross-linking between proteins caused by aldehyde fixation reagent, and fully expose the antigenic sites of paraffin-embedded tissue sections, thereby significantly improving immunostaining effectiveness
Application: This product is especially suitable for paraffin sectioning and can also be used for frozen sectioning
Precautions: （1）Soak in antigen retrieval solution (1×). The best heating time needs to be explored according to different samples and target proteins. （2）Please wear a lab coat and disposable gloves when operating
Optimal Storage Conditions: Store at 2 - 30°C. Keep product stored within this temperature range to maintain integrity and stability
#1 COVID-19 SELF TEST IN THE USA: Made with the same reliable technology used by doctors. Detects multiple COVID-19 variants, including Delta and Omicron*
FAST RESULTS: At home test with results for you or your family in 15 minutes; no need for a prescription or sending to a lab
TRUSTED TECHNOLOGY: Identical to the test used by professionals; intended for personal use with self-reported results and has Emergency Use Authorization from the FDA
CONVENIENTLY TEST AT HOME: 2 nasal swab tests are included to detect active infection, with or without symptoms
FSA/HSA ELIGIBLE: Test may be reimbursed, depending on coverage; contact your health insurance company to learn more
FOR AGES 2 TO ADULT: For children as young as 2 years old when administered by an adult, and for all people 15 and older to self-administer
This home test works just like a pregnancy test - one line means negative, two lines means positive. The test can be performed on materials, including fabric, swabs, and bodily fluids.
This test looks for a protein called prostate-specific antigen (PSA), not found in any other bodily fluids except minute amounts in blood, urine and some female bodily fluids.
A positive result indicates the presence of PSA, suggesting the presumptive presence of semen. Confirm results with a DNA test.
FDA Authorized 4-in-1 Rapid Test: Over-the-counter at-home test authorized to detect COVID-19, Flu A, Flu B, and RSV, with results in approximately 15 minutes.
Authorized for Ages 6 Months and Up: Adult-assisted sample collection required for ages 6 months–13 years; self-collection permitted for ages 14 years and older.
Detects Multiple Respiratory Viruses: Designed to detect common respiratory viruses from a single sample when symptoms are consistent with respiratory infection.
Simple At-Home Testing Process: Uses a familiar rapid test procedure similar to COVID-19 and flu tests, detecting four viruses with one sample.
Compact and Portable Design: Easy to store and suitable for home use or travel, providing a convenient testing option when symptoms arise.
COVID TEST KITS: 4 BinaxNOW COVID-19 Rapid Test Kits includes 4 foam-tipped swabs, 4 test cards, and 4 dropper bottles with simple instructions
HSA/FSA ELIGIBLE: Abbott’s BinaxNOW at-home COVID test kits are HSA/FSA eligible
TRUSTED TECHNOLOGY: FDA authorized BinaxNOW COVID tests utilize the same technology doctors use to test for COVID-19; BinaxNOW rapid COVID tests detect multiple COVID-19 variants*
FAST COVID-19 TEST RESULTS: Each COVID rapid test provides fast, reliable results in just 15 minutes—no appointment required
FOR AGES 2 and ABOVE: COVID-19 tests are suitable for kids when administered by an adult; ages 15 and older are able to self-administer COVID home tests with easy-to-follow instructions
REPEAT TESTING: Symptomatic individuals with negative results should test twice over 3 days, with at least 48 hours between testing; asymptomatic individuals should test 3 times over 5 days, with at least 48 hours between tests
FDA Authorized 15-Minute Flu A&B, COVID Test Kit: Over-the-counter flu and COVID test for home use with rapid results in just 15 minutes.
Made for Ages 2 and Above; Parents Can Stop Guessing: Quickly identify whether you or your kids are dealing with coronavirus or influenza A & B. Adult-collection is required for those aged 2-13 years, and self-collection by individuals aged 14 years and...
Same Ease-of-Use; Get 3 Results in 1 Test: Utilizing the familiar 4 user-friendly steps of at-home COVID tests, you can now get all 3 results for COVID-19 and Flu A & B at once with 5 drops of sample.
Fast and Convenient COVID and Flu Tests for Home: Use this COVID and influenza rapid test kit in the comfort of your home. Bypass the need for a doctor's visit and protect your loved ones from potential exposure to contagious illnesses at school, work, or...
Compact Design for On-the-Go Testing: Stay safe wherever you go with our COVID-19, Flu A & B 3-in-1 self-test. Its compact design ensures easy storage and convenient portability for your travel bag.
Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lab Antigens
Source and Supplier Reputation
Choose antigens from well-established and reputable suppliers known for their quality control and product consistency. Consider the supplier's track record, customer reviews, and the availability of technical support. A reliable source ensures that the antigens meet stringent quality standards and will perform as expected in your research or diagnostic workflow.
Frequently Asked Questions
What is the difference between a native and a recombinant antigen?
Native antigens are isolated directly from their natural source, such as a virus or bacterium. Recombinant antigens are produced using genetic engineering techniques, where the gene for the antigen is inserted into a host organism for expression. Recombinant antigens often offer higher purity and consistency.
How do I determine the correct concentration for my assay?
The optimal concentration is assay-dependent and often determined empirically through titration experiments. Factors such as antibody affinity, detection method, and desired sensitivity will influence the ideal concentration. Consult the product datasheet for initial recommendations.
What is a Certificate of Analysis (CoA)?
A Certificate of Analysis (CoA) is a document provided by the manufacturer that verifies the quality and specifications of a particular lot of product. It typically includes details on purity, identity, and testing results, confirming the product meets established standards.
Can antigens expire?
Yes, antigens can degrade over time, especially if not stored correctly. Their biological activity can be lost, leading to reduced performance in assays. Always check the expiration date and follow recommended storage conditions to maximize shelf life.
What is the difference between an antigen and an antibody?
An antigen is a substance that can trigger an immune response, typically by binding to antibodies. An antibody is a protein produced by the immune system to identify and neutralize foreign substances like antigens. They have opposing roles in the immune system.
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