Order Catalog Implementation Guide
1.0.0 - STU 1

Order Catalog Implementation Guide, published by HL7 International / Orders and Observations. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-order-catalog/ and changes regularly. See the Directory of published versions

## Example ObservationDefinition: Lab observation vitamin D

Page standards status: Informative

Observation Definition - Vitamin D serum test:

Medical biology test: Vitamin D assay in blood serum

Category: laboratory

Identification: 14635-7 |25-hydroxyvitamin D3 [Moles/volume] in Serum or Plasma| (http://loinc.org)

Permitted result types: quantitative, textual

Multiple results: no

Preferred report name: Vitamin D

Unit of measure: pmol/L (http://unitsofmeasure.org)