Chest pain may be caused by poor blood flow to the heart leading to angina, or by a sudden blockage in the coronary arteries resulting in a heart attack. Other causes of chest pain can include indigestion, reflux, muscle strain, inflammation in the rib joints near the breastbone, and herpes zoster or shingles.
Your GFR tells your doctor your stage of kidney disease and helps the doctor plan your treatment. If your GFR number is low, your kidneys are not working as well as they should.
The glomerular filtration rate (GFR), sometimes known as estimated glomerular filtration rate or eGFR, is a test that is used to determine how well the kidneys are functioning. It is not used to diagnose kidney conditions but can be useful in the diagnostic process.