| Field code | CB_CMV_NAT | 
| Field description | CBU CMV NAT status | 
| Field type | Alphanumeric Length: 1 | 
| Field rule | P = Positive N = Negative | 
| Dictionary field | CMV NAT result (The test result to reflect the evidence of CMV infection by amplifying nucleic acid) | 
| EMDIS messages | CBU_DIFF CBU_FULL | 
| WMDA XML fields related to dictionary field | CMV_NAT |