Final answer:
Screening tests can have issues such as false-positive and false-negative results. A false-positive result can lead to unnecessary further testing and anxiety, while a false-negative result can result in a delayed diagnosis and treatment.
Step-by-step explanation:
Screening tests are used to detect diseases or conditions in individuals who do not have symptoms. However, there are some issues that can arise with screening tests. One issue is the possibility of false-positive results, which occur when a person is erroneously identified as having a condition or disease. False positives can lead to unnecessary further testing, anxiety, and potential harm from invasive procedures.
On the other hand, a false-negative result occurs when a person who has a condition or disease is wrongly identified as not having it. This can delay necessary treatment and lead to worsening of the condition. For example, a false-negative result in a cancer screening test may result in a delay in diagnosis and treatment.