You Tell the Class That ELISAs and Western Blots Are

question 26

Multiple Choice

You tell the class that ELISAs and Western blots are performed in a clinic or laboratory. However, there are a variety of tests that can be performed at home. With the oral fluid antibody self-test, a person swabs their own mouth and uses a kit to test the sample. The kit looks similar to a pregnancy test. Saliva is collected on a swab which is then inserted into the "tube" containing a test strip on which certain HIV proteins are bound. The saliva moves up the test strip until it reaches two windows on the tube - one is labeled C and the other is labeled T. When the saliva reacts with the bound virus proteins, a color change is seen. Results are interpreted as follows:
No color in the C window-test is not working.
Color in the C window but none in the T window-negative result.
Color in the C window and color in the T window-positive result.
Given this information, select the FALSE statement.

• A) The C window is a positive control-if color appears there, it confirms that the test is working properly.
• B) The T window is the test window. If color appears both there and in the C window, it indicates that anti-HIV antibodies are present in the person's saliva.
• C) This test is an ELISA test that is used to detect antibodies in a person's saliva.
• D) If color appears in the T window but not in the C window, the kit is not working properly.
• E) This test is an ELISA test that is used to detect the presence of viral capsid proteins in a person's saliva.

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Definitions:

Setters

Positions or roles in various games or activities that involve organizing or preparing something for use, specifically referring to a key player in volleyball responsible for setting the ball for attacks.

Assists

In various contexts, this term refers to the action of helping or supporting.

Days Absent

The number of days an individual is not present at their scheduled location, often used in contexts like school or work attendance records.

Standard Deviation

A benchmark for the level of variation or the dispersion rate within a cluster of data.