| Common test name | Primary test name | Specimen | Container | Referred test | Patient cost | Comments/Instructions |
|---|---|---|---|---|---|---|
| X-linked Hydrocephalus Genetic Testing | L1 CAM Gene | Blood | EDTA Tube 4 ml | Yes | No | |
| Xylose | Xylose | Blood | Serum Separator Tube (SST) | Yes | No | |
| Xylose Urine | Xylose Urine | Urine | Urine container Alkaline 24 hour | Yes | No |