2023年6月7日 · A CA 19-9 test is one of a panel of tests used to detect early-stage cancer. As a tumor marker that’s produced by cancer and other cells in the body, CA 19-9 provides important clues about the presence and progression of cancer. The CA 19-9 blood test is used to help support a patient’s cancer diagnosis and assess cancer treatment.

2022年8月11日 · A CA 19-9 test measures the amount of a protein called CA 19-9 (cancer antigen 19-9) in a sample of your blood. CA 19-9 is a type of tumor marker. Tumor markers are substances made by cancer cells or by normal cells in response to cancer in your body.

Carbohydrate antigen 19-9 (CA19-9), also known as sialyl-Lewis A, is a tetrasaccharide which is usually attached to O-glycans on the surface of cells. It is known to play a role in cell-to-cell recognition processes.

The CA 19-9 Radioimmunoassay (RIA) is a simple blood test that measures the level of tumor-associated antigens found in the blood. CA 19-9 associated antigen levels are elevated in many patients with pancreatic cancer.

CA19-9是 胰腺癌， 胃癌，结、直肠癌、 胆囊癌 的相关标志物，大量研究证明CA19-9浓度与这些肿瘤大小有关，是至今报道的对胰腺癌敏感性最高的标志物。 胰腺癌患者85%～95%为阳性，CA19-9测定有助于胰腺癌的鉴别诊断和病情监测。 当CA19-9小于1000 U/ml时，有一定的手术意义，肿瘤切除后CA19-9浓度会下降，如再上升，则可表示复发。 对胰腺癌转移的诊断也有较高的阳性率，当血清CA19-9水平高于10000 U／ml时，几乎均存在外周转移。 胃癌、 结直肠癌 …

2023年5月4日 · 當發生CA19-9指數偏高，通常會建議間隔1～2個月再次抽血檢驗確認，或由醫師直接安排影像檢查，完整檢視胰臟狀態，進一步確認CA19-9指數升高是否是胰臟癌所致。 看更多： 婦科腫瘤CA125指數偏高是罹患卵巢癌了？ 醫曝這些身體症狀會讓CA125指數升高. 為什麼王阿嬤發現CA19-9指數偏高，腹部超音波檢查卻找不到胰臟異常病變？ 沈彥君解釋，胰臟的位置相當深，而且位於胃部後方，若僅安排超音波檢查，事實上會因為器官遮蔽而無法完整觀察胰臟。 …

CA 19-9 (Carbohydrate Antigen 19-9) is a protein that is produced by normal cells but is often elevated in certain types of cancers. It is primarily associated with pancreatic cancer but can also indicate other conditions like gallbladder cancer, liver disease, or benign disorders.

2021年6月23日 · Cite this page: Pernick N. CA 19-9. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/stainsca19-9.html. Accessed March 7th, 2025. Serum levels also elevated in cirrhosis, cholestasis and pancreatitis but …

糖类抗原 19-9（carbohydrate antigen 19-9；CA 19-9） 一种大分子糖蛋白，属 Lewis 血型抗原类肿瘤标志物，是用结肠癌细胞株 SW1116 细胞表面分离出 来的单唾液酸神经节糖苷脂作为抗原，制成相应的单克隆抗体 1116-NS-19-9，用此单克隆抗体识别的肿瘤相关抗原即为 CA19-9 ...

2 天之前 · CA 19-9 is a glycoprotein within the carbohydrate antigen family, specifically a sialylated derivative of the Lewis A (Le^a) antigen, known as sialyl-Lewis A (sLe^a). This molecular structure plays a role in cell adhesion and communication, primarily in epithelial tissues. Its biosynthesis involves enzymatic modifications by ...