Fig. 2
From: Blood biomarkers for mild traumatic brain injury: a selective review of unresolved issues
Tmax is the time at which the biomarker is at its highest level. The half-life is the time needed for the biomarker level to drop by 50% during the elimination phase. Accurate estimates of half-life can only be made after the absorption phase is complete. With delayed or continuing absorption of biomarker after mTBI estimates of half-life are difficult