A 100-gram serving of raw spinach contains 2.71 mg of iron, whereas cooked spinach contains 3.57 mg. Keep in mind that iron absorption is influenced by how much iron you already have in your body and by other nutrients that you eat with your meals.
Cardiac catheterization is an invasive test performed by a cardiologist, where a catheter is threaded into the coronary arteries (those arteries that supply the heart muscle with blood) through the femoral artery in the groin, the radial artery in the wrist, or the brachial artery in the elbow.
More in Heart Disease. Cardiac enzymes (the old name), or cardiac biomarkers (the new name), are blood tests that are used to detect damage to heart muscle cells. Cardiac biomarkers are proteins from heart muscle cells that have leaked out into the bloodstream after an injury to the cardiac muscle. Creatine kinase and troponin are the two proteins currently measured in biomarker tests.