Straight freeze

Straight freeze is cryopreservation of the patient without administration (perfusion) of a cryoprotectant. Straight freeze results in complete freezing (i.e., ice crystal formation throughout all tissues of the patient), causing damage. However, in straight freeze, cryoprotectant toxicity is not an issue that needs solving.

Patients who were straight frozen include Ban Jung-gi, CI-100, Robert Nelson, Laurence Pilgeram, and Paul Segall.