ASU = Arizona State University; ARS = acute radiation syndrome; FN = false negative measured in nonirradiated, normal populations; FP = false positive measured in populations exposed to ≥1 Gy; HSCT = hematopoietic stem cell transplant; GI = gastrointestinal; LDK = lymphocyte depletion kinetics, ID = identify. aAnalysis performed without consideration for compound injury (trauma, burn, etc.). To consider compound injury, treatment and risk should be evaluated for a dose 2 Gy higher than estimated. bUncertainty ranges are based on k-factor multiplied by standard deviations as computed by Monte Carlo simulation. The k-factor is set to 95% confidence, 99% coverage. cTreatment guidance references Garty et al. 2017 and Coleman et al. 2011 (1, 18 ). dInternational Atomic Energy Agency Report 1998 (7 ).