When Testing for Antiviral IgM Antibody, False-Negative Results May Occur

question 16

Multiple Choice

When testing for antiviral IgM antibody, false-negative results may occur when

• A)rheumatoid factor combines with homologous or virus-specific IgG present in the patient specimen.
• B)high levels of strongly binding homologous IgG antibodies prevent binding of IgM molecules.
• C)antibody-Fc receptors occur in cells infected with virus.
• D)All of the above are correct.

---

Definitions:

Increased Profits

A rise in the amount of net earnings gained from business operations after all costs have been subtracted.

Indirect Exporting

A form of exporting where a company sells its products to a third party, such as an export intermediary, who then sells the products in foreign markets.

Intellectual Property

Legal rights that result from intellectual activity in the industrial, scientific, literary, or artistic fields.

Royalty

A payment made to an owner of certain types of rights, such as patents, copyrights, or natural resources, for the right to use those rights.