A carrier free nanoparticle formulation with good circulation stability is made for anticancer drug delivery. Nanocrystals crystalized in the medium containing Pluronic F-127 then coated with albumin (Cim-F-Alb) had the smallest size and the most native albumin, and showed most favorable cell interaction profiles and better stability than commercial albumin based Abraxane formulation, while maintaining comparable cytotoxicity to those of Abraxane and solvent-dissolved paclitaxel (PTX).