What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 48181-2: Reference change value 0.95 Unsp time (population) [#]

Name: LOINC Code 48181-2: Reference change value 0.95 Unsp time (population) [#]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:32.262Z

48181-2 is a LOINC code used to identify Reference change value 0.95 Unsp time (population) [#] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Reference change value 0.95. It is commonly used with the system or sample type ^Population.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Reference change value 0.95. It is commonly used with the system or sample type ^Population.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE
Order vs observation: Observation

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Reference change value 0.95 [#] in unspecified time Population
Reference change value 0.95
This term is used to convey the difference value between two analytical observations that are greater than or equal to 95% of all difference values.
?Tm; Cnt; Count; Exchange; NR Stats; Number; QNT; Quan; Quant; Quantitative; RCV 0.95; Replace

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Reference change value 0.95 Unsp time (population) [#]Reference change value 0.95 [#] in unspecified time PopulationRCV 0.95 ?Tm PopReference change value 0.95NR STATSReference change value 0.95, populationNum

Frequently asked questions

Code details

Code48181-2

SystemLOINC

Display nameReference change value 0.95 Unsp time (population) [#]

DescriptionReference change value 0.95

Short nameRCV 0.95 ?Tm Pop

ComponentReference change value 0.95

PropertyNum

TimingXXX

System (specimen)^Population

ScaleQn

ClassNR STATS

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.21

Last changed2.69

Consumer names

Reference change value 0.95, population

Part names

Reference change value 0.95NumXXX^PopulationQnNumber (count)Unspecified

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.