# LabObservation

Model ID: `diagnostics.LabObservation`

A single lab result line item, mapped to/from a FHIR Observation.

Type: `object`

## Fields

| Field | Type | Required | Format | Allowed values | Default | Nullable | Description |
|---|---|---:|---|---|---|---:|---|
| `display` | `string` | Yes |  |  |  | No | Human-readable name of the measured analyte. |
| `effective_datetime` | `string|null` | No |  |  |  | Yes | ISO 8601 datetime the observation was effective, optional. |
| `interpretation` | [`InterpretationCode`](./InterpretationCode.md) | No |  |  |  | Yes | Clinical interpretation flag, e.g. high/low/critical/positive/negative. |
| `loinc_code` | `string` | Yes |  |  |  | No | LOINC code identifying the measured analyte. |
| `notes` | `string|null` | No |  |  |  | Yes | Free-text notes, optional. |
| `observation_id` | `string|null` | No |  |  |  | Yes | FHIR Observation resource ID; auto-generated if omitted. |
| `reference_range` | [`diagnostics.ReferenceRange`](./diagnostics.ReferenceRange.md) | No |  |  |  | Yes | The normal/expected range for this result, optional. |
| `status` | [`ObservationStatus`](./ObservationStatus.md) | No |  |  | `"final"` | No | Observation lifecycle status. |
| `value_boolean` | `boolean|null` | No |  |  |  | Yes | Boolean result value, when applicable. |
| `value_coding` | `object|null` | No |  |  |  | Yes | Coded result value (raw FHIR CodeableConcept), when applicable. |
| `value_quantity` | `number|null` | No |  |  |  | Yes | Numeric result value, when the result is quantitative. Requires value_unit. |
| `value_string` | `string|null` | No |  |  |  | Yes | Free-text result value, when the result is not quantitative. |
| `value_unit` | `string|null` | No |  |  |  | Yes | Unit of measure for value_quantity, optional. |

## Example

None declared in canonical OpenAPI.