occult blood test

• 潜血试验,隐血试验

occult blood test的用法和样例：

例句

1. An annual fecal occult blood test, or a new ersion called a fecal immunochemical test, to look for blood in the stool.
   每年一次粪便隐血试验，或者新的粪便免疫化学试验，来检查大便中有无血液。