LOINCActiveObservation

LOINC Code 3165-8: Specimen volume (72 hour Stl) [Vol/Time]

3165-8 is a LOINC code used to identify Specimen volume (72 hour Stl) [Vol/Time] 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 Specimen volume. It is commonly used with the system or sample type Stool.

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 Specimen volume. It is commonly used with the system or sample type Stool.

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

  • Volume [Flow] of 72 hour Stool
  • Specimen volume
  • 3 days; 72 hours; 72HR; Bowel movement; Faecal; Faeces; Fecal; Feces; Flow; QNT; Quan; Quant; Quantitative; Spec; Stl; Stool = Fecal; Vol; Volume rate; vRate

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

Specimen volume (72 hour Stl) [Vol/Time]Volume [Flow] of 72 hour StoolSpecimen vol 72h Stl-vRateSpecimen volumeSPECSpecimen volume, StoolVRat

Frequently asked questions

Code details

Code3165-8
SystemLOINC
Display nameSpecimen volume (72 hour Stl) [Vol/Time]
DescriptionSpecimen volume
Short nameSpecimen vol 72h Stl-vRate
ComponentSpecimen volume
PropertyVRat
Timing72H
System (specimen)Stool
ScaleQn
ClassSPEC
Example unitsmL/72 H
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.42

Consumer names

Specimen volume, Stool

Part names

Specimen volumeVRat72HStoolQnVolume Rate72 hours

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 3165-8 | HealthAssure