Yes, a blood test can detect blocked arteries. This is done through a test called an arterial blood gas test, also known as an ABG. During this test, a sample of blood is taken from an artery in the arm or neck and analyzed to measure the levels of oxygen, carbon dioxide, and other gases in the blood. High levels of carbon dioxide and low levels of oxygen can indicate the presence of blockages in the arteries. The test can also be used to diagnose other cardiovascular problems, such as coronary artery disease, hypertension, and congestive heart failure. In addition, the test can help identify conditions that may be contributing to blocked arteries, such as diabetes, high cholesterol, and smoking.
The ABG is a relatively simple and painless procedure, but it does require the use of needles and can cause some minor discomfort. In some cases, the results from the test can be seen immediately, while in other cases, it may take up to several hours for the results to be available.
Overall, the arterial blood gas test is a helpful tool for diagnosing blocked arteries. It can help provide doctors with an accurate diagnosis and guide them in developing a treatment plan for the patient.