Complete Blood Count (CBC)

A complete blood count (CBC) is a common blood test that measures the different cells in your blood, including red blood cells, white blood cells, and platelets. It gives your doctor a broad picture of your overall health and can help detect a wide range of conditions, such as infections, anemia, and certain blood disorders.

The amylase test measures the amount of amylase in your blood. Amylase is an enzyme (a protein that speeds up chemical reactions) primarily produced by the pancreas and salivary glands. This enzyme helps your body break down carbohydrates (starches) into sugar for energy.

You may need this test as part of a routine checkup, or because you have symptoms like fatigue, weakness, fever, unusual bruising, or unexplained weight loss. A CBC can help your doctor diagnose an infection or anemia, monitor a long-term condition, or check how treatments such as chemotherapy or certain medicines are affecting your blood cells.

Your doctor may order an amylase test if you have symptoms suggesting a pancreatic problem, such as severe abdominal pain, nausea, vomiting, fever, or loss of appetite. It helps diagnose conditions like pancreatitis (inflammation of the pancreas), pancreatic cancer, gallstones, or pancreatic duct obstruction. The test may also be used to monitor ongoing pancreatic conditions.

The test is done with a simple blood draw. A healthcare provider will clean your skin, wrap a band around your upper arm, and insert a small needle into a vein, usually in your arm. The sample is collected into a tube and sent to a laboratory. The procedure takes only a few minutes, and you can usually return to your normal activities right away.

A healthcare professional will draw a small blood sample from a vein in your arm using a needle. The sample is then sent to a laboratory for analysis. You do not need to fast for most amylase tests, but follow any specific instructions from your doctor. The procedure only takes a few minutes.

Your results show whether your red blood cells, white blood cells, platelets, hemoglobin, and hematocrit are within the normal range. Values that are too high or too low can point to conditions such as anemia, infection, inflammation, or bleeding problems. A single abnormal value does not always mean you are ill, so your doctor will review your results together with your symptoms and medical history and discuss what they mean for you.

Normal amylase levels typically range from 23 to 85 units per liter (U/L), though reference ranges vary between laboratories. Elevated amylase levels may indicate pancreatitis, pancreatic cancer, gallstones, kidney disease, or certain medications. Low levels are less common but can occur with pancreatic insufficiency or certain liver diseases. Your doctor will interpret your results in the context of your symptoms and other test findings.