Helicobacter pylori stool antigen test as a non-invasive detection of Helicobacter pylori infection diagnostic methods, with the characteristics of convenient, simple, easy to repeat.

幽门螺杆菌粪便抗原检测作为非侵入性幽门螺杆菌现症感染的诊断方法，具有种简便、易行、易重复的特点。

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We began promoting and using the prostate-specific antigen test before it had been adequately evaluated.

CNN: Screening for prostate cancer? Patients should decide

In May 2012, the U.S. Preventive Services Task Force recommended against routine PSA screening (Prostate-Specific Antigen test to screen Prostate cancer) before being diagnosed as it did not benefit patients.

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Well, there is a reference to the pain of the test itself, presumably the PSA (Prostate Specific Antigen) test.

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