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.
10314(X). Method. 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.able 2 provides interpretation of specific eGFR values. Creatinine measurements, and therefore eGFR calculations, are affected by very high or very low muscle mass, muscle injury, a diet very high in meat, hepatic cirrhosis, certain drugs, etc.