There are some limitations of our study that must be addressed: (1) the small number of study population, the full lipid profile was not taken to compare the predictive power of Apo B, and Apo B/Apo A1 ratios with LDL and triglycerides in detection of severe coronary artery disease, we failed to exclude patients who were already on statin therapy before presentation with ACS and lastly there was no follow-up for the patients with higher levels of ApoB and ApoB/ApoA ratios in order to detect early and late cardiovascular events. Here, APOA1 is linked to coronary artery disorder.