GSTM1 and chronic kidney disease: Na - sodium. K - potassium. Cl - chloride. CREA - creatinine. eGFR - estimated glomerular filtration rate. CKD-EPI - chronic kidney disease epidemiology collaboration. Glc - glucose. CRP - C-reactive protein. WBC - white blood cells. Hb - hemoglobin. Plt - platelets.