diagnostic test的用法和樣例：
例句
- If the scratch test is positive, the patient has IgE on the skin's mast cells that is specific to the food being tested.
對病人消化一定量乳糖酶的能力有很多診斷試驗，醫生通過分析血液標本的實驗結果推測人體的反應。 - A spontaneous breathing trial is the major diagnostic test to determine whether patients can be successfully extubated.
自主呼吸試驗是以確定病患是否可以成功地拔管主要診斷性試驗。
