LOINCActiveBoth

LOINC Code 9631-3: Viscosity (Sem) [Visc]

9631-3 is a LOINC code used to identify Viscosity (Sem) [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 Semen.

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 Semen.

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

Viscosity of Semen
Viscosity
Viscosity is the measurement of resistance of a liquid to flow. Viscosity is a characteristic property of a fluid and typically is a constant for a given liquid at a given temperature. [PMID16830959] Semen may be measured quantitatively using a viscometer rather than the traditional subjective rating method. Determining the seminal viscosity with a quantitative method may be valuable in identifying and treating the subgroup of infertile men with viscid semen. [PMID: 1358311]
Ejaculate; Genitourinary; GU; Point in time; QNT; Quan; Quant; Quantitative; Random; Sem; Seminal fluid; Smn; SMPLS; SPEC; URO; Urology; 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 (Sem) [Visc]Viscosity of SemenVisc SmnViscositySPECViscosity, SemenVisc

Frequently asked questions

Code details

Code9631-3
SystemLOINC
Display nameViscosity (Sem) [Visc]
DescriptionViscosity
Short nameVisc Smn
ComponentViscosity
PropertyVisc
TimingPt
System (specimen)Semen
ScaleQn
ClassSPEC
Example unitscP
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0i
Last changed2.73

Consumer names

Viscosity, Semen

Part names

ViscosityViscPtSemenQnPoint in time (spot)

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 9631-3 | HealthAssure