You should send it to do black stool occult blood test, such as occult blood positive, that upper gastrointestinal bleeding, it should be consistent with a water wash corrosive link.

你应该送黑便做大便隐血试验，如隐血阳性，说明上消化道出血，那就应与洗甲水的腐蚀性联系起来。

youdao

You should send it to do black stool occult blood test, such as occult blood positive, that upper gastrointestinal bleeding, it should be consistent with a water wash corrosive link.

你应该送黑便做大便隐血试验，如隐血阳性，说明上消化道出血，那就应与洗甲水的腐蚀性联系起来。

youdao