The       ABP Operating Guidelines  – Version 9.0 – July 2023  Page 5/91 ABP can notably be used as a complement to Analytical Testing  Procedures  to further refine and strengthen overall anti -doping strategies:  • For the Hematological Module, this could be, for example,  by directing Testing  for Agents  Affecting Erythropoiesis  (AAEs) or homologous blood transfusion (HBT).