Quality Observable with Ratio

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

Note that Ratio concepts are given a parent of 540131010000107 |Ratio observable (observable entity)| to group them together.

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

The java implementation of this template can be found here.

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 Divisor: Specifies what the observation is relative to.

LOINC Properties currently supported: "MRto", "Ratio", "SRto", "NRto", "CRto"

Template

Model

=== 540131010000107 |Ratio observable (observable entity)| : 
{
	[S1] 246093002 |Component (attribute)| -> 1166006 |Titanium (substance)|,
	[S1] 370130000 |Property (attribute)| -> 118545004 |Mass ratio (property) (qualifier value)|,
	[S1] 370132008 |Scale type (attribute)| -> 30766002 |Quantitative (qualifier value)|,
	[S1] 370134009 |Time aspect (attribute)| -> 123029007 |Single point in time (qualifier value)|,
	[S1] 704325000 |Relative to (attribute)| -> 15373003 |Creatinine (substance)|,
	[S1] 704327008 |Direct site (attribute)| -> 122575003 |Urine 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] + SEPARATOR + [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 SEPARATOR is determined programatically and might be "to" or a "/" symbol.

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:

Concept Id	Description Id	Acceptability	Term	Case
483251010000104	2216711010000115	US: P	Mass ratio of titanium to creatinine in urine at point in time (observable entity)	ci
483251010000104	2221411010000114	US: P	Titanium/Creatinine [Mass Ratio] in Urine	CS
483251010000104	2221431010000117	US: A	Titanium/Creatinine (U) [Mass ratio]	CS
483251010000104	2221441010000113	US: A	Titanium/Creatinine:MRto:Pt:Urine:Qn	CS
483251010000104	2221391010000114	US: A	Mass ratio of titanium/creatinine in urine at point in time	ci
483251010000104	2221401010000111	US: A	Mass ratio of titanium to creatinine in urine at point in time	ci

Examples

LOINC Term 104656-4

Loinc Parts

Part Type	LOINC Part Name	LOINC Part Num	Mapped to Attribute Type / Value
Component	Titanium	LP16839-0	246093002 |Component (attribute)| -> 1166006 |Titanium (substance)|
Divisors	Creatinine	LP32035-5	704325000 |Relative to (attribute)| -> 15373003 |Creatinine (substance)|
Property	MRto	LP6834-8	370130000 |Property (attribute)| -> 118545004 |Mass ratio (property) (qualifier value)|
Time	Pt	LP6960-1	370134009 |Time aspect (attribute)| -> 123029007 |Single point in time (qualifier value)|
System	Urine	LP7681-2	704327008 |Direct site (attribute)| -> 122575003 |Urine specimen (specimen)|
Scale	Qn	LP7753-9	370132008 |Scale type (attribute)| -> 30766002 |Quantitative (qualifier value)|

Provide Feedback