Why Might an HIV Test Be Negative Within the First

question 19

Multiple Choice

Why might an HIV test be negative within the first two to three weeks of an HIV infection?

• A) because there is no HIV in the blood
• B) because there are no detectable levels of HIV antibodies in the blood
• C) because there are no symptoms
• D) because the CD4 T-cell count is above 500 cells/mm³
• E) because there are no opportunistic infections yet

---

Definitions:

Differential Threshold

The smallest detectable difference between two stimuli or the minimum change in intensity that a person can detect.

Marketers

Professionals or organizations responsible for promoting, selling, and distributing products or services to customers.

Absolute Threshold

The minimum stimulus intensity that an organism can detect half the time.

Perception

The process by which individuals organize and interpret sensory information from their environment to understand and interact with the world around them.