Elemental abundances in HD 131399A, relative to the cosmic abundance standard (CAS Nieva & Przybilla 2012; Przybilla et al. 2013), supplemented by solar meteoritic abundances (Asplund et al. 2009) where unavailable from young massive stars. The grey bar spans the expected CAS range. Non-LTE abundances for HD 131399A are indicated by filled, and LTE values by open symbols. Squares mark data based on neutral species, and circles data from single-ionized species. Error bars are 1σ uncertainties as deduced from from the line-to-line scatter.