Clinical medicineLesson 1 of 1 in the course Differential diagnosis and clinical reasoning

Medical Tests: Purposes, Results, Interpretation, and Risks

5 flashcards · 5 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

Medical tests help clinicians detect or diagnose disease, monitor a condition, and guide decisions about care. This lesson introduces the main purposes of testing and the ways tests can be grouped by method and sample.

A diagnostic test is used to determine whether a disease or condition is present in someone suspected of having it. Suspicion may arise from symptoms, signs, or results of another test. For example, a blood glucose measurement may help investigate symptoms such as increased urination, while an electrocardiogram may help assess heart irregularities in a person with chest pain.

All flashcards

What is a diagnostic test?
A test used to investigate whether a condition is present in someone suspected of having it.
What is screening?
Testing a defined group, often before symptoms arise, to look for possible disease; a positive result does not establish a diagnosis.
How do accuracy and precision differ?
Accuracy is closeness to the true value; precision is reproducibility across repeated measurements.
What is post-test probability?
The probability of a condition after a test result has been considered.
What is an incidentaloma?
An imaging finding unrelated to the reason for the test, which may be benign or require evaluation.

Quiz questions

  1. What does a positive result mean when a test detects whether a target finding is present?Answer: The evaluated finding was detected.
  2. A stimulus is given and the body's response is measured. Which method category does this describe?Answer: An in vivo test
  3. What is an indication for a medical test?Answer: A valid medical reason to perform the test.
  4. How can a false-positive result create an indirect risk?Answer: It may lead to further procedures that carry their own risks.
  5. What is an incidentaloma?Answer: An imaging finding unrelated to the reason for testing.

Based on the Wikipedia article Medical test, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.

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