本帖最后由 荷花池荒岛 于 2014-6-9 09:42 编辑
大家都在提CEA,用CEA,可是CEA到底是什么?CEA是怎么测量的?什么因素会影响CEA的测量结果?
1)http://www.ccalliance.org/patients/patients_faq.html
What does CEA stand for? What does it mean?
CEA stands for "carcinoembryonic antigen." That's just a fancy term for a protein that is released into the blood by some cancer cells in some (but not all) people. Sometimes other cells may release it, and in some patients CEA is never present at levels that can be detected. If you are one of the people who has an elevated CEA before your surgery, it should return to normal within a few weeks of surgery if all the cancer was removed. If not, your doctors will need to investigate to find the source of the elevated CEA level. You will need to check with your doctor to see what the normal level is in the laboratory that he/she uses to determine the levels. In most labs, the normal level is 0-3 for those who do not smoke and 0-5 for smokers. In a few places, a normal level of 0-5 is used for all patients.
If your CEA level is normal for a while after surgery and then begins to increase, your doctors will want to investigate further to find out why the CEA is still too high. Increased CEA may mean you have another medical problem, because many illnesses, and even the cancer treatment itself, can cause cells to produce an increased level of CEA. It can also mean that the cancer has recurred. Don't panic if your CEA begins to rise. Remember that it is an imperfect measure of a protein that may or may not mean you have cancer or that your cancer has returned (recurred).
google翻译:
CEA代表的是什么?它的意义是什么?
CEA代表“癌胚抗原(carcinoembryonic antigen)”。这只是一个花哨的术语,被释放到血液中某些癌细胞在一些(但不是全部)的人的蛋白质。有时其他细胞会释放,并且在一些患者中CEA是从不存在于可检测的水平。如果你是谁,你在手术前有升高CEA的人之一,应该如果移除所有的癌症恢复正常几周内手术。如果没有,你的医生会需要调查发现高架CEA水平之源。你需要检查你的医生,看看正常水平是在他/她使用来确定级别实验室的东西。在大多数实验室,正常水平为0-3对于那些谁不吸烟和0-5为吸烟者。在一些地方,0-5正常水平适用于所有患者。
如果你的CEA水平是正常的,而手术后,然后开始增加,你的医生会想进一步调查,以找出原因东航仍然过高。CEA增加可能意味着你有其他的医疗问题,因为很多疾病,甚至癌症治疗本身,可引起细胞产生CEA水平的提高。它也可以意味着癌症已经复发。如果你的CEA开始上升,不要惊慌。请记住,它是可能或可能不意味着你是得了癌症,你的癌症已经返回(复发)的蛋白质存在缺陷。
2) 检测CEA的方式有三种:化学发光、酶联免疫吸附、放射免疫。
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