| Code | Description | Comment | Version | 
| AMB  | Ambient temperature | Keep at ambient (room) temperature, approximately 22 ( 2 degrees C. Accidental refrigeration or freezing is of little consequence | added v2.5 | 
| C37  | Body temperature | Critical to keep at body temperature: 36 - 38( C. | added v2.4 | 
| CAMB  | Critical ambient temperature | Critical ambient - must not be refrigerated or frozen. | added v2.4 | 
| CATM  | Protect from air | Critical. Do not expose to atmosphere. Do not uncap. | added v2.4 | 
| CFRZ  | Critical frozen temperature | Critical frozen - must not be allowed to thaw until immediately prior to testing | added v2.4 | 
| CREF  | Critical refrigerated temperature | Critical refrigerated -  must not be allowed to freeze or warm until immediately prior to testing | added v2.4 | 
| DFRZ  | Deep frozen | Deep frozen: -16 to -20( C. | added v2.5 | 
| DRY  | Dry | Keep in a dry environment. | added v2.5 | 
| FRZ  | Frozen temperature | Keep at frozen temperature: -4( C. Accidental thawing is of little consequence | added v2.5 | 
| MTLF  | Metal Free | Container is free of heavy metals including lead. | added v2.5 | 
| NTR  | Liquid nitrogen | Keep in liquid nitrogen. | added v2.5 | 
| PRTL  | Protect from light | Protect from light (e.g. wrap in aluminum foil). | added v2.4 | 
| PSA  | Do not shake | Do not shake. | added v2.5 | 
| PSO  | No shock | Protect from shock. | added v2.5 | 
| REF  | Refrigerated temperature | Keep at refrigerated temperature: 4-8( C. Accidental warming or freezing is of little consequence | added v2.5 | 
| UFRZ  | Ultra frozen | Ultra cold frozen: ~ -75 to -85( C. (ultra cold freezer is typically at temperature of dry ice). | added v2.5 | 
| UPR  | Upright | Keep upright. Do not turn upside down. | added v2.5 |