| Field code | CB_AL_SER | 
| Field description | Number of CBU serum aliquots available | 
| Field type | Numeric Length: 2 | 
| Field rule | |
| Dictionary field | Unit serum aliquots (Number of serum aliquots available for testing) | 
| EMDIS messages | CBU_DIFF CBU_FULL | 
| WMDA XML fields related to dictionary field | AL_SER |