Why Do False-Negative Rh Testing Results Occur in Babies with Severe

question 24

Multiple Choice

Why do false-negative Rh testing results occur in babies with severe hemolytic disease of the newborn due to anti-D?

• A) The cord cells may be contaminated with Wharton's jelly.
• B) All D sites are covered by maternal anti-D, which blocks the reagent.
• C) Antigens are not expressed yet.
• D) None of the above

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Definitions:

Confounding Variable

An external factor in an experiment that can affect the results in a way that is not intended, making it difficult to establish a clear cause-and-effect relationship.

Poverty Level

A defined threshold by the government or organizations below which individuals or families are considered to be lacking the financial resources to meet basic needs for living.

Aggressive Children

Children who exhibit behaviors that are intended to cause harm or discomfort to others, such as hitting, biting, or verbal insults.

Economic Status

The social standing or class of an individual, group, or area based on factors like income, education, and employment.