Human pepsinogens I (PGI) and II (PGII) are proenzymes of pepsin—an endoproteinase of gastric juice. PGI is secreted mainly by chief cells in the fundic mucosa, whereas PGII is also secreted by the pyloric glands and the proximal duodenal mucosa. Serum PGI and PGII concentrations and the ratio between PGI and PGII may be related to the histologic and functional status of the gastric mucosa.
Human Pepsinogens are aspartic proteases produced in the gastric mucosa and secreted into the gastric lumen that play a major role in the digestion of proteins after activation of acidic pH. It is synthesized as isoymogens and is classified into two groups (Pepsinogen I and Pepsinogen II).
Human Pepsinogens are aspartic proteases produced in the gastric mucosa and secreted into the gastric lumen that play a major role in the digestion of proteins after activation of acidic pH. It is synthesized as isoymogens and is classified into two groups (Pepsinogen I and Pepsinogen II).
PSA, a protein produced by prostate gland cells, circulates through the body in two ways: either bound to other proteins or on its own. PSA traveling alone is called free PSA. The free-PSA test measures the percentage of unbound PSA.
Prostate-specific antigen, or PSA, is a protein produced by normal, as well as malignant, cells of the prostate gland. The PSA test measures the level of PSA in a man's blood.
Carcinoembryonic antigen (CEA) is a protein normally found in very low levels in the blood of adults. The CEA blood level may be increased in certain types of cancer and non-cancerous (benign) conditions. A CEA test is most commonly used for colorectal cancer.
Alpha-fetoprotein (AFP) is a protein produced primarily by the liver in a developing baby (fetus) and the portion of a developing embryo that is similar to the yolk cavity in bird eggs (yolk sac tissues). AFP levels are typically elevated when a baby is born and then decline rapidly.
Biotime 2 in 1 (CEA/AFP) test kit has very important guiding significance in the diagnosis of liver cancer and can improve the accuracy of clinical diagnosis.
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