Fecal Occult blood test Every year to detect hidden blood in the stool, a possible sign of colon cancer.

粪便潜血检验每年一次，以检查粪便中是否潜血，粪便潜血是结肠癌的可能征兆。

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Fecal Occult blood test Every year to detect hidden blood in the stool, a possible sign of colon cancer.

粪便潜血检验每年一次，以检查粪便中是否潜血，粪便潜血是结肠癌的可能征兆。

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