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.
A blood test for eGFR or estimated glomuler filtration rate is a measurement used to check for the stage of renal failure that a person is experiencing. This is a test that is quite complicated and requires a trained nephrologist to perform.