Screening is done because of all except:
**Core Concept**
Screening is a public health strategy aimed at detecting diseases or conditions in asymptomatic individuals before the onset of symptoms. This approach enables early intervention and prevention of complications, ultimately reducing morbidity and mortality.
**Why the Correct Answer is Right**
The correct answer, **D. Use of clinical or laboratory tests to detect disease in individual seeking health care for other reasons**, refers to the process of incidental detection of disease during routine medical examinations or diagnostic tests for unrelated conditions. This is not considered screening, as it does not involve the application of tests to apparently healthy individuals. In contrast, screening involves the systematic application of tests to asymptomatic populations to identify unrecognized disease.
**Why Each Wrong Option is Incorrect**
**Option A:** Testing for infection or disease in population or in individuals who are not seeking health care is a characteristic of screening, as it targets asymptomatic individuals to identify unrecognized disease.
**Option B:** Presumptive identification of unrecognized disease is indeed a key aspect of screening, which relies on the application of tests to asymptomatic populations to identify potential cases.
**Option C:** Search for unrecognized disease or defect by means of rapidly applied test, examinations, or other procedures in apparently healthy individuals is a defining feature of screening, as it targets asymptomatic individuals.
**Clinical Pearl / High-Yield Fact**
Screening programs should be evidence-based, cost-effective, and address a significant public health burden. They should also be implemented in a way that minimizes false positives and ensures timely and effective follow-up care for those identified with a condition.
**✓ Correct Answer: D. Use of clinical or laboratory tests to detect disease in individual seeking health care for other reasons**