There are several different types of tests for pancreatic cancer.
CA19-9 Blood Test: This blood test looks for the presence of certain proteins or tumor markers shed by pancreatic cancer cells.  This test is not the gold standard but can provide useful information to your doctors.
Biopsy: A small amount of tissue is removed from the pancreas. The doctor will then examine the tissue to check for abnormal and cancerous cells.
Endoscopic Ultrasound (EUS): The use of high-frequency sound waves to create images of the lining and walls of your digestive tract, chest, pancreas, liver, and lymph nodes.
CT Scan: The combination of a series of x-rays to create detailed images of the inside of your abdomen and pelvis.
MRI: This test uses magnetic waves to create pictures of the inside of the abdomen.
PET Scan: A scan of the entire body to determine if cancer has spread elsewhere in your body. PET scans can sometimes detect disease before it shows up on other imaging tests.