Fig 3. Simplified algorithm model for Multi-HTLV confirmation result.

The decision tree representing the interpretation algorithm of the Multi-HTLV test, is divided into three steps. The first step is to classify the sample into three categories according to the number of confirmatory antigens with an intensity greater than or equal to 10. The second step is to apply the first logistic regression formula for confirmation to categorize samples with a number of reactive antigens greater than or equal to 1. Finally, the third step is to apply a logistic regression formula for typing, only on positive samples.