| Answer | Present | LA9633-4 |
| Answer | Not demonstrated | LA21362-1 |
| answers-for | Porphobilinogen [Presence] in 24 hour Urine | 12245-7 |
| answers-for | Porphobilinogen [Presence] in Urine | 2809-2 |
| STATUS | NotStated |
| LONG_COMMON_NAME | en-US | Pres/Not demon |
LOINC Version: 2.81