Immunodiagnostics Flashcards
1
Q
What does positive predictive value mean?
A
The percentage of people who had a positive test result who turn out to have the disease.
2
Q
What does negative predictive value mean?
A
The percentage of people with a negative result who turn out to not have the disease.
3
Q
What values are indicative of sensitivity?
A
True positive values.
TP/(TP+FN) %
4
Q
What values are indicative of specificity?
A
True negative values.
TN/(TN+FP). %
5
Q
What is the impact of indiscriminate testing on the patient?
A
May lead to FP’s, which add stress, anxiety and risk to the patient.
- Leads to unnecessary tests and inappropriate treatment.
- Causes a delay in obtaining the correct diagnosis.
Also delays results for other patients and increases cost for hospital and patient.
