| parent | Amino acids | LP18033-8 |
| child | Formiminoglutamate | LP70083-8 |
| child | Histidine | Amniotic fluid | Chemistry - non-challenge | LP384006-5 |
| child | Histidine | Blood | Chemistry - non-challenge | LP384007-3 |
| child | Homocarnosine | LP15639-5 |
| child | Hydantoin-5-propionate | LP201850-7 |
| child | Histidine | DBS | Chemistry - non-challenge | LP384008-1 |
| child | Histidine | Body fluid | Chemistry - non-challenge | LP384009-9 |
| child | Histidine/Creatinine | LP286213-6 |
| child | Histidine/Amino acids.total | LP286212-8 |
| child | Histidine | Cerebral spinal fluid | Chemistry - non-challenge | LP384010-7 |
| child | Histidine | Hair | Chemistry - non-challenge | LP384011-5 |
| child | Histidine | Serum or Plasma | Chemistry - non-challenge | LP384012-3 |
| child | Histidine | Urine | Chemistry - non-challenge | LP384013-1 |
| child | Histidine | Vitreous fluid | Chemistry - non-challenge | LP384014-9 |
| child | Histidine | XXX | Chemistry - non-challenge | LP384015-6 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Histidine |
| DisplayName | en-US | Histidine |
LOINC Version: 2.81