A diagnostic test is never perfect. The fundamental problem lies between the sensitivity and the specificity of a test. These characteristics oppose each other, and choices in test design reflect the search for the optimal combination of sensitivity and specificity according to the clinical situation in which it is used.
For example, screening mammograms have to be very sensitive, to detect as many cancers as possible. Therefore the specificity is sacrificed so that we may identify as many early breast cancers as possible. Consequently, many screening mammograms which are interpreted as being abnormal do not, in the end, detect a real cancer. Many other abnormalities are found, and the diagnostic workup weeds these out so that the cancers are finally identified.
The flip side would be a very specific but not very sensitive test. Breast ultrasound, to determine the nature of an anomaly is very specific for simple cysts and certain cancers, but is not sensitive - hence it is not used in screening but rather in the workup of an abnormal screening mammogram.
Test design takes into account the two sides, and conscious decisions are made to favor either sensitivity or specificity.
performs special diagnostic tests
Global Diagnostic Tests Market
Laboratories
There are home medical diagnostic tests, but they are not used to daignose serious health issues. These tests are designed to detect prenancy, or drug use. They are usually around 45 dollars.
* Gynecological exam* Ultrasound* Placenta hormone blood tests
Diagnostic tests include: resting, exercise, or ambulatory electrocardiograms; scintigraphic studies; echocardiography; coronary angiography; and rarely positron emission tomography.
An array of advanced diagnostic tests is available at Top Heart Hospital in Jaipur which includes ECG, 2D Echo, TMT, and Angiography.
Medical diagnostic is a place where the laboratory tests are done. The results are very important to diagnose and treat the diseases.
ekg, echo, ct, X-ray
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You can study for tests and do extra credit.
Test(s) to differentiate between conditions. In medicine, to specifically diagnose a disease.