Quality Observable with Relative to

This template is used when the LOINC term involves a component and is relative to something else, such as a reference point or another component.

This template is documented in Confluence here: Quality observable with Component and Relative to for LOINC (observable entity) - v1.0”

The java implementation of this template can be found: https://github.com/IHTSDO/reporting-engine/blob/2025_Q4/script-engine/src/main/java/org/ihtsdo/termserver/scripting/pipeline/loinc/template/LoincTemplatedConceptWithRelative.java

Attributes

• LOINC Property: Represents the property of the observation, such as mass concentration or presence.

• LOINC Scale: Describes the scale type, like quantitative or qualitative.

• LOINC Time: Indicates the time aspect of the observation, e.g., single point in time.

• LOINC System: Specifies the direct site of the observation.

• LOINC Method: Describes the technique used for the observation.

• LOINC Component: Represents the specific component being measured or observed.

• LOINC Relative To: Specifies what the observation is relative to.

LOINC Properties currently supported: "NFr", "MFr", "CFr", "AFr", "VFr", "SFr"

Template

Model

=== 363787002 |Observable entity (observable entity)| : 
{
        246093002 |Component (attribute)| -> 55918008 |Monocyte (cell)|, 
 	246501002 |Technique (attribute)| -> 708058007 |Flow cytometry technique (qualifier value)|, 
 	370130000 |Property (attribute)| -> 118552002 |Number fraction (property) (qualifier value)|, 
 	370132008 |Scale type (attribute)| -> 30766002 |Quantitative (qualifier value)|, 
 	370134009 |Time aspect (attribute)| -> 123029007 |Single point in time (qualifier value)|, 
 	704325000 |Relative to (attribute)| -> 52501007 |Leukocyte (cell)|, 
 	704327008 |Direct site (attribute)| -> 119297000 |Blood specimen (specimen)| 
}

Terming

Template slots are filled by taking the preferred term of the relevant value from the model and making the initial character lower case, if allowed by the case significance setting of the preferred term.

[PROPERTY] of [COMPONENT] to [DIVISORS] in [SYSTEM] at [TIME] by [METHOD] using [DEVICE] [CHALLENGE]

Some slots are optional, and are then tidied up along with any linking words (eg 'using')

The LOINC Long Common Name is specified as the Preferred Term and the LOINC Short Common Name is also included unchanged as an acceptable synonym. Finally a terse form of the LOINC Parts is added, with all part names specified, separated by colons.

In the case of the example below, this results in the following terms:

• 2199641010000117 [480621010000102] US: P Number fraction of monocyte to leukocyte in blood at point in time by flow cytometry (observable entity) [ci],

• 2199631010000113 [480621010000102] US: P Monocytes/Leukocytes in Blood by Flow cytometry (FC) [CS],

• 2199651010000115 [480621010000102] US: A Monocytes/Leukocytes FC (Bld) [CS],

• 2199661010000118 [480621010000102] US: A Monocytes/Leukocytes:NFr:Pt:Bld:Qn:Flow cytometry [CS],

• 2199621010000110 [480621010000102] US: A Number fraction of monocyte to leukocyte in blood at point in time by flow cytometry [ci]

Examples

LOINC Term 101147-7

Loinc Parts

Part Type	LOINC Part Name	LOINC Part Num	Mapped to Attribute Type / Value
Component	Monocytes	LP14313-8	Trypanosoma cruzi (substance)| to 246093002 |Component (attribute)| -> 55918008 |Monocyte (cell)|
Divisors	Leukocytes	LP157588-7	704325000 |Relative to (attribute)| -> 52501007 |Leukocyte (cell)|
Property	NFr	LP6838-9	370130000 |Property (attribute)| -> 118552002 |Number fraction (property) (qualifier value)|
Time	Pt	LP6960-1	370134009 |Time aspect (attribute)| -> 123029007 |Single point in time (qualifier value)|
System	Bld	LP7057-5	704327008 |Direct site (attribute)| -> 119297000 |Blood specimen (specimen)|
Scale	Qn	LP7753-9	370132008 |Scale type (attribute)| -> 30766002 |Quantitative (qualifier value)|
Method	Flow cytometry	LP6274-7	246501002 |Technique (attribute)| -> 708058007 |Flow cytometry technique (qualifier value)|

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