As a medical professional with expertise in oncology, I can tell you that there are several methods available for testing and diagnosing pancreatic cancer. While blood tests can be a part of the diagnostic process, they are typically not the sole method used to detect pancreatic cancer. Here's a step-by-step approach to how pancreatic cancer might be diagnosed: 1. Physical Examination and Medical History: The doctor will begin with a physical examination and take a detailed medical history to assess any symptoms or risk factors. 2. Imaging Tests: If there is a suspicion of pancreatic cancer, doctors often order imaging tests such as an ultrasound, CT (computed tomography) scan, MRI (magnetic resonance imaging), or PET (positron emission tomography) scan to visualize the pancreas and check for tumors. 3. Blood Tests: Blood tests can be used to check for certain markers that may be elevated in pancreatic cancer, such as CA 19-9. However, these tests are not definitive for pancreatic cancer and can be elevated due to other conditions as well. 4. Liver Function Tests: Jaundice, which is a common symptom of pancreatic cancer, can be investigated through liver function tests. These tests help to determine the cause of jaundice, which could be due to liver disease, gallbladder issues, or pancreatic cancer. 5. Endoscopic Procedures: If a tumor is suspected, an endoscopic ultrasound (EUS) or endoscopic retrograde cholangiopancreatography (ERCP) may be performed. These procedures allow for a closer look at the pancreas and can guide a biopsy. 6. Biopsy: A biopsy, where a small sample of tissue is taken from the pancreas, is often the definitive test for pancreatic cancer. This sample is then examined under a microscope to look for cancer cells. It's important to note that while blood tests can provide valuable information, they are just one part of a comprehensive diagnostic approach. Pancreatic cancer is often diagnosed at a later stage because its symptoms are nonspecific and can mimic other conditions. Therefore, a thorough evaluation by a healthcare professional is crucial. read more >>

Blood tests for exocrine pancreatic cancers. Liver function tests: Jaundice (yellowing of the skin and eyes) is often one of the first signs of pancreatic cancer, but it can have many causes other than cancer. Doctors often get blood tests to assess liver function in people with jaundice to help determine its cause.read more >>