M.J. Adkesson, R.E. Junge, M.C. Allender & T. Martïín-Jiménez Pharmacokinetics of a long-acting ceftiofur crystalline-free acid formulation in Asian elephants (Elephas maximus) American Journal of Veterinary Research 73 (2012) 1512-1518 Abstract. Objective—To determine the pharmacokinetics of a long-acting formulation of ceftiofur, ceftiofur crystalline-free acid (CCFA), following SC injection ...