粪便潜血试验(occult blood test，OBT)
粪便潜血试验(occult blood test，OBT)
参考解析
解析：参考值
潜血是指消化道出血少，肉眼无法观察到红色，且被消化液分解又在显微镜下不能发现
红细胞。目前OBT广泛使用单克隆抗体技术，不受动物血红蛋白的影响。正常粪便OBT阴性。
临床意义
潜血阳性见：
(1)消化道溃疡，呈间歇性；
(2)消化道肿瘤，呈持续性间歇性；
(3)其他，任何导致消化道出血的原因或疾病，如药物、肠结核、Crohn病等
潜血是指消化道出血少，肉眼无法观察到红色，且被消化液分解又在显微镜下不能发现
红细胞。目前OBT广泛使用单克隆抗体技术，不受动物血红蛋白的影响。正常粪便OBT阴性。
临床意义
潜血阳性见：
(1)消化道溃疡，呈间歇性；
(2)消化道肿瘤，呈持续性间歇性；
(3)其他，任何导致消化道出血的原因或疾病，如药物、肠结核、Crohn病等
相关考题：
You have been badly injured in a car accident. It is necessary to give you a blood transfusion because you lost a great deal of blood in the accident. However, special care must be taken in selecting new blood for you. If the blood is too different from your own, the transfusion could kill you. There are four basic types of blood: A, B, AB, and O. A simple test can indicate a person's blood type, which, like hair color and height, is inherited from parents. Because of substances contained in each type, the four groups must be transfused carefully. Basically, A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. O can give to any other group; hence, it is often called the universal donor. For the opposite reason, AB is sometimes called the universal recipient. However, because so many reactions can occur in transfusions, patients usually receive only salt or plasma (liquid) until their1、A good title for this passage is ________.A、Getting Blood and PlasmaB、Special Blood TypesC、Human Blood TypesD、The Blood Bank of a Hospital2、The word "hence" in line 10 means _________A、alwaysB、 oftenC、 thereforeD、 seldom3、In a blood transfusion, it is easiest to find the acceptable type of blood for a person with the blood type of ________A、AB、 BC、 ABD、 O4、The purpose of using salt and plasma before a blood transfusion is to allow time ______.A、to test the reactions to the transfusionB、for matching the blood to be transfused with the patient's bloodC、 for the blood to be delivered from the blood bankD、 to select a new type of blood for the patient5、Most Europeans have blood type _________A、AB、BC、OD、A or O
单选题下述哪三项是提高早期胃癌诊断率的关键性手段？（ ）A纤维胃镜检查，胃液细胞学检查，X线钡餐检查B胃液细胞学检查，粪便潜血试验，纤维胃镜检查C胃液细胞学检查，粪便潜血试验，X线钡餐检查D纤维胃镜检查，胃液酸碱度检查，X线钡餐俭查E纤维胃镜检查，粪便潜血试验，X线钡餐检查
名词解释题隐血试验(occultbloodtest，OBT)