One Drop of Coombs' Control Cells Was Added to a Negative

question 47

Multiple Choice

One drop of Coombs' control cells was added to a negative antibody screen. No agglutination was observed after centrifugation. What course of action is taken?

• A) Report negative result
• B) Report inconclusive result
• C) Repeat the test
• D) Add one more drop of check cells and re-centrifuge

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Definitions:

Infinite

Without any limit or end; in mathematics, a concept describing something that has no boundaries in size or number.

Market-Neutral

An investment strategy that seeks to minimize exposure to market risk by taking offsetting long and short positions in different securities.

Long-Short Hedges

This refers to an investment strategy that involves taking long positions in stocks that are expected to increase in value and short positions in stocks expected to decrease in value.

Security Asset Mispricing

Occurs when the market price of an asset does not reflect its true intrinsic value, due to information asymmetry, investor irrationality, or other factors.