| Field code | CB_MAT_AL_SER |
| Field description | Number of serum maternal aliquots |
| Field type | Numeric Length: 2 |
| Field rule | |
| Dictionary field | Maternal serum aliquots (Number of available maternal serum aliquots) |
| EMDIS messages |
CBU_DIFF CBU_FULL |
| WMDA XML fields related to dictionary field |
AL_SER |