Oladimeji, OOladimeji, AOladimeji, O2023-05-302023-05-302021-09-01O. Oladimeji, A. Oladimeji, O. Oladimeji,DETECTING BREAST CANCER THROUGH BLOOD ANALYSIS USING DECISION TREE (J48) CLASSIFICATION ALGORITHM .Journal of Fundamental and Applied Sciences.VOL13 N03.01/09/2022.university of el oued [visited in ../../….]. available from [copy the link here]1112 9867http://dspace.univ-eloued.dz/handle/123456789/25006ArticleBreast cancer is the second major cause of death in the world. Breast cancer accounts for 16% of all cancer deaths worldwide. Most of the methods of detecting breast cancer very expensive and difficult such as mammography. The objective of this research paper is detecting breast cancer through blood analysis using J48 algorithm which will serve as alternative to these expensive methods. The J48 algorithm was used to classify 116 instances also,10-fold cross validation and holdout procedure were used coupled changing of random seed. Average accuracies of 84.65% and 89.99% were acquired for cross validation and holdout procedure. Although it was also discovered that Blood Glucose level is a major determinant in detecting breast cancer, it has to be combined with other attributes to make decision as a result of other health issues such as diabetes.enJ48 Algorithm, Breast Cancer, Decision Tree, Machine learning, Data MiningArticle