What is monospecific AHG reagent?

Monospecific AHG reagents can confirm which globulins are present. The serum/plasma can be tested to detect and identify clinically significant antibodies to red cell antigens. An eluate can be prepared from the sensitized red cells.

What is Polyspecific AHG reagent?

The proprietary name for this product is Anti-Human Globulin Anti-IgG, -C3d; Polyspecific (Rabbit/Murine Monoclonal) (Green); hereafter referred to as Polyspecific AHG. This AHG reagent is designed to detect IgG and/or C3b, and/or C3d components on the surface of human red blood cells.

What is anti-IgG used for?

Intended Use Anti-Human Globulin Anti-IgG is used for the indirect antiglobulin test to demonstrate the in-vitro coating of red blood cells with antibody molecules as in the detection and identification of unexpected antibodies as well as crossmatch tests.

What is monospecific Antiglobulin reagents?

Anti- C3d monospecific Coombs reagent is used in indirect antiglobulin testing to distinguish pattems of reactivity in a single serum containing complement binding and non-complement binding antibodies.

What are the two types of AHG reagent?

There are two types of AHG reagents, polyspecific and monospecific reagents.

What is the difference between Polyspecific and monospecific AHG?

The poly-specific AHG contains antibody to IgG with the human complement. The difference between the two AHG is based on the number of the presence of specific antibody. The monospecific AHG contains only one specific antibody.

What does a positive IAT signify?

A positive test result could mean your blood and the donor’s blood are not compatible. A positive test result during pregnancy could mean your baby has hemolytic disease.

What is the principle of AHG testing?

Principle of the AHG Test Because antibodies are gamma globulins, an antibody to gamma globulin can form bridges between red cells sensitized with antibody and cause them to agglutinate (Figure 3-1). Since most incomplete antibodies are IgG, polyspecific AHG serum contains anti-IgG.

What is the advantage of monospecific AHG?

Using monospecific anti-IgG AHG reagents to detect unexpected antibodies offers reliability while avoiding interference from some common and clinically insignificant IgM complement-fixing antibodies, and thereby saves time and expense.

When to use monospecific IgG or polyspecfic reagent in IAT?

In most cases, we use polyspecific AHG (simply because it is cheaper), but Shily is quite correct in what she says. If we have a stubborn auto-antibody, however, we will more often than not use a monospecific anti-IgG reagent (despite the cost) because we tend to get better, clearer results that way.

When to use anti-globulin anti-IgG,-C3D?

Anti-Human Globulins Anti -IgG,-C3d are intended for the use in the direct antiglobulin test to detect the in vivo coating. on human red blood cells with IgG and C3d components. • Anti-Human Globulin Anti-IgG recognizes IgG antibodies.

When to use anti IgG or polyspecific AHG?

I use anti-IgG unless I am performing a Direct Coombs’ test, in which case I also use anti-C3b,-C3d. We do not stock polyspecific antiglobulin. In most cases, we use polyspecific AHG (simply because it is cheaper), but Shily is quite correct in what she says.