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 eGFR is calculated using isotope dilution mass spectrometry (IDMS)-traceable serum creatinine measurements and the patientâs age (18 years and older), gender, and race (African American vs non-African American) according to the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. 4 Alternative calculations have been proposed for patients under age 18 years, but they are not offered by Quest at present.