Lipids accumulate in arterial walls in atherosclerosis. In the present study, we could find no evidence of an association between lipid fractions and CADB. Most patients were treated with lipid-lowering drugs, and this may be one of the reasons behind these negative findings, particularly in what concerns LDL cholesterol. In the present study, HDL cholesterol levels were also not correlated to CADB, although previous studies have been shown HDL to be negatively associated with the importance of coronary artery disease, whereas no such relation was noted involving LDL cholesterol. Calcium is yet another substance that is frequently found in atherosclerotic lesions. In a previous study carried out in patients with acute coronary syndrome, a relatively weak but significant correlation was noted between plasma calcium and CADB. In the present study, however, no significant correlation with CADB was found either with calcium or phosphorus. The mean plasma calcium measured in the present investigation was, in fact, significantly higher than in the previous study, indicating that, as previously reported, plasma calcium values measured in inpatients may be different from values measured in outpatients, and may not hold precisely the same physiological significance. Renal dysfunction could act as a risk factor for coronary artery disease. However, it is unclear if renal dysfunction acts as a cause for accelerated coronary artery disease or if it merely acts as a surrogate marker for the overall systemic vascular system status. Obesity also acts as a risk factor for cardiovascular disease. Previous studies have shown that increased BMI values may be associated to lower coronary artery disease burden, a finding that may depend on the fact that such patients are frequently studied at an earlier age. In the present investigation, no relation was noted between BMI and CADB, Quercetin-7-O-beta-D-glucopyranoside neither in univariate nor in linear regression analysis. Diabetes mellitus is a well known risk factor for coronary artery disease, as well as cardiovascular disease in Gluconate Calcium general. Glucose metabolism has been shown to correlate with the angiographic importance of coronary artery disease, data in good agreement with the present results.