[
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    "phenotype_id": "PH1942",
    "phenotype_version_id": 4543,
    "name": "Calcium level",
    "definition": "This codelist was taken from [OpenCodelists](https://www.opencodelists.org/), created by [OpenSAFELY](https://www.opensafely.org/). We recommend viewing this Phenotype on the OpenCodelist website to view the most recent version.\n\n\n...\n\n\n© University of Oxford for the Bennett Institute for Applied Data Science 2025\\. This work may be copied freely for non\\-commercial research and study.\n\n",
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    "created": "2026-01-26T21:31:20.793220Z",
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    "updated": "2026-01-26T21:31:20.788142Z",
    "references": [],
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    "methodology": "...\n\n",
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      }
    ],
    "open_codelist_id": "ardens/calcium-level",
    "source_reference": "https://www.opencodelists.org/codelist/ardens/calcium-level/2020-11-06",
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        "phenotype_name": "Calcium level",
        "code_attribute_header": [],
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          {
            "code": "1000691000000101",
            "description": "Serum calcium level",
            "attributes": null
          },
          {
            "code": "1017391000000108",
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          },
          {
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          },
          {
            "code": "1106611000000103",
            "description": "Substance concentration of calcium in plasma",
            "attributes": null
          },
          {
            "code": "1106621000000109",
            "description": "Substance concentration of calcium in serum",
            "attributes": null
          },
          {
            "code": "935051000000108",
            "description": "Serum adjusted calcium concentration",
            "attributes": null
          },
          {
            "code": "935201000000104",
            "description": "Plasma adjusted calcium concentration",
            "attributes": null
          },
          {
            "code": "993131000000109",
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            "attributes": null
          }
        ]
      }
    ],
    "coding_system_release": "",
    "open_codelist_version_id": "4f6517b6",
    "open_codelist_version_tag": "2020-11-06",
    "status": 1,
    "doi": "https://doi.org/10.48533/g0qs-ks46",
    "is_deleted": false,
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    },
    "versions": [
      {
        "version_id": 4543,
        "version_name": "Calcium level",
        "version_date": "2026-01-26T21:31:20.802007Z",
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      }
    ]
  }
]