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.

LOINCActiveBoth

LOINC Code 72648-9: Glucose in serum - glucose in synovial fluid (S/P+Syn fld) [Molar conc diff]

Name: LOINC Code 72648-9: Glucose in serum - glucose in synovial fluid (S/P+Syn fld) [Molar conc diff]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:51.525Z

72648-9 is a LOINC code used to identify Glucose in serum - glucose in synovial fluid (S/P+Syn fld) [Molar conc diff] 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 Glucose.serum-glucose.synv fld. It is commonly used with the system or sample type Ser/Plas+Synv fld.

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 Glucose.serum-glucose.synv fld. It is commonly used with the system or sample type Ser/Plas+Synv fld.

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: Both

What it does not mean

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

Key facts

Glucose in serum - glucose in synovial fluid [Molar concentration difference]
Glucose.serum-glucose.synv fld
Chemistry; Glu; Gluc; Gluc.synv fld; glucose gradient; Glucose ser - synv fld; Glucoseur; Joint aspirate; Joint fld; Joint flu; Joint fluid; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SCDiff; Ser; SerP; SerPl; SerPl+Synv; SerPlas; Serum; Serum or plasma; SF; SNV; SR; Syn; Syn fl; Synov; Synovial fluid

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

Glucose in serum - glucose in synovial fluid (S/P+Syn fld) [Molar conc diff]Glucose in serum - glucose in synovial fluid [Molar concentration difference]Glucose ser - synv fld-SCDiffGlucose.serum-glucose.synv fldCHEMGlucose in serum - glucose in synovial fluid, S/P+Syn FldSCncDiff

Frequently asked questions

Code details

Code72648-9

SystemLOINC

Display nameGlucose in serum - glucose in synovial fluid (S/P+Syn fld) [Molar conc diff]

DescriptionGlucose.serum-glucose.synv fld

Short nameGlucose ser - synv fld-SCDiff

ComponentGlucose.serum-glucose.synv fld

PropertySCncDiff

TimingPt

System (specimen)Ser/Plas+Synv fld

ScaleQn

ClassCHEM

Example unitsmmol/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.42

Last changed2.50

Consumer names

Glucose in serum - glucose in synovial fluid, S/P+Syn Fld

Part names

Glucose.serum-glucose.synv fldSCncDiffPtSer/Plas+Synv fldQnGlucose in serum - glucose in synovial fluidSubstance concentration differencePoint in time (spot)Serum or Plasma and Synovial fluid

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.