Chromogranin A (CGA) Blood Test
Test Code: 140848
Specimen Type: Blood
Chromogranin A (CGA) Blood Test (Labcorp)
This test measures levels of Chromogranin A in the blood. Chromogranin A is a protein produced by cells found in endocrine glands throughout the body. Certain types of tumors caused increased production of Chromogranin A. Carcinoid tumors, which typically form in the lungs or gastrointestinal tract are often associated with increased CGA levels. Measuring CGA levels can aid in diagnosing some types of cancer as well as monitoring response to treatment.
A Chromogranin A test is often ordered when a person is experiencing symptoms such as rapid heart rate, nausea, diarrhea, wheezing, coughing, difficulty breathing, or flushing of the face which are associated with carcinoid tumors. The CGA test may also be ordered to see how well a person is responding to treatment or to check for the recurrence of tumors. Other conditions such as liver disease, kidney failure, and inflammatory bowel disease are also associated with increased levels of Chromogranin A. CGA is often measured along with other tumor markers such as Neuron Specific Enolase.
Turnaround for this test is typically 4-6 business days.
Where can I find a Chromogranin A test near me?
Check our lab finder to locate a collection site in your area.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
It is recommended that someone taking Biotin (also known as vitamin B7 or B8, vitamin H, or coenzyme R) stop consumption at least 72 hours prior to the collection of a sample.