I.4.3  The integrity of the Markers used in the hematological module of the Athlete Biological Passport is guaranteed when the Blood Stability Score (BSS) remains below eighty -five (85), where the BSS is computed  as: BSS = 3 * T + CAT  with CAT being the Collection to Analysis Time (in hours), and T the average Temperature   ISTI – Effective 1 January 2023  Page 83 of 92 (in degrees  Celsius)  measured by the data logger between Sample collection and analysis.