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Antibodies

The utility of SARS-CoV-2 IgA in COVID-19 testing

At the outset of the 2019 SARS-CoV-2 / COVID-19 epidemic, diagnostic immunoassay manufacturers focused on developing anti-SARS-CoV-2 IgM & IgG tests. While the epidemic has progressed to become a global pandemic, diagnostic test developers’ efforts have also evolved. Recently, we have noticed an increase in interest for patient material positive for Human anti-SARS-CoV-2 IgA. This article will take a look at the difference between the different immunoglobulin sub-classes and seek to...

James Steggles
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SARS-CoV-2 – Beware Antibody Tests with <100% Specificity

We are in the midst of the most significant global pandemic since the 1918-19 Influenza pandemic, over 100 years ago. The 2020 pandemic has been caused by a Coronavirus, named SARS-CoV-2, which confers a severe respiratory illness (COVID-19) on a proportion of those infected. The virus is readily transmissible from human to human with many of those infected showing no or mild symptoms, meaning it is hard to know who...

James Steggles
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HAMA-Time! – How Human Anti-Mouse Antibodies (HAMA) can affect your immunoassay

What is HAMA? HAMA is an acronym for Human Anti-Mouse Antibodies. Some humans produce HAMA and have it present in their blood. Unfortunately for them, and the in vitro diagnostics industry, the presence of Human anti-mouse Antibodies (HAMA) in patient samples can lead to false positive and false negative results in immunoassays.     Murine MC HAMA Why do some Humans produce HAMA? Some people work directly with mice while others might inadvertently encounter mouse proteins...

James Steggles
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Our MD interviewed by Sona Nanotech at AACC

Our Managing Director James Steggles took time out at the recent AACC conference to join up with Sona Nanotech (experts in colloidal gold for Lateral Flow / Rapid Tests) to discuss human patient materials, reagents for IVD immunoassays and more! Tune in here: https://anchor.fm/sonananotech   ...

James Steggles
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Irregular Blood Group Antibodies – What Are They?

Irregular antibodies are antibodies found in the blood of transfusion donors that have the potential to cause hemolysis of the recipient blood. Screening using an indirect Coombs Test should be performed to ensure that the donor blood is compatible with the recipient. “Irregular Antibodies” refers to all antibodies, other than those detecting ABO blood group antigens, that can cause incompatibility in blood transfusions and between mother & child. The ABO Blood...

James Steggles
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