LOINCActiveObservation

LOINC Code 41238-7: Viscosity (Syn fld) [Visc]

41238-7 is a LOINC code used to identify Viscosity (Syn fld) [Visc] 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 Viscosity. It is commonly used with the system or sample type Synv fld.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Viscosity. It is commonly used with the system or sample type 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: Observation

What it does not mean

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

Key facts

  • Viscosity of Synovial fluid
  • Viscosity
  • Viscosity is the measurement of resistance of a liquid to flow and can be measured using qualitative or quantitative methods. Synovial fluid is very viscous due to its high concentration of polymerized hyaluronate.
  • Joint aspirate; Joint fld; Joint flu; Joint fluid; Point in time; QNT; Quan; Quant; Quantitative; Random; SF; SNV; SPEC; Syn; Syn fl; Synov; Synovial fluid; Vicos; Viscos; Viscosity

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

Viscosity (Syn fld) [Visc]Viscosity of Synovial fluidVisc SnvViscositySPECViscosity, Synovial fluidVisc

Frequently asked questions

Code details

Code41238-7
SystemLOINC
Display nameViscosity (Syn fld) [Visc]
DescriptionViscosity
Short nameVisc Snv
ComponentViscosity
PropertyVisc
TimingPt
System (specimen)Synv fld
ScaleQn
ClassSPEC
Example unitscP
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.73

Consumer names

Viscosity, Synovial fluid

Part names

ViscosityViscPtSynv fldQnPoint in time (spot)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.

LOINC Code 41238-7 | HealthAssure