| Field identifier | AL_SER |
| Field description | Number of serum aliquots available |
| Element type | MatType |
| Field type | Short |
| Required | No |
| Length | |
| Comment | Number between 0 and 99, no decimals |
| Dictionary field | Maternal serum aliquots (Number of available maternal serum aliquots) |
| EMDIS fields related to dictionary field |
CB_MAT_AL_SER |