occult blood

基本解释

Methods Urine liquidanalyzer inspection and only clone antibody occult blood test.
方法：尿液分析仪检查和单克隆抗体隐血试验。
By using globin lipoplast, the authors established latex agglutination test to determine occult blood.
本文应用珠蛋白脂质体建立了胶乳凝集实验测便潜血。
Fecal occult blood test had a positive rate of 84% and 3 consecutive tests (positive rate 100%) are important rather than one test (positive rate 20%).
粪潜血试验的阳性率为84％，作1次试验的阳性率仅20％，连续3次试验的阳性率为100％。

That means I need to put on a sweatshirt and get down to the gastroenterology clinic and have a colonoscopy or a flexible sigmoidoscopy, or even get a fecal occult blood test from my primary care physician.
FORBES: Reason #73 That No One Wants a Colonoscopy