LOINCActiveObservation

LOINC Code 34978-7: Specimen volume (Periton fld)

34978-7 is a LOINC code used to identify Specimen volume (Periton fld) 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 Periton 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 Specimen volume. It is commonly used with the system or sample type Periton 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

  • Volume of Peritoneal fluid
  • Specimen volume
  • Ascites; Ascitic fluid; Ascitis; Peritoneal fluid; Point in time; Prt; QNT; Quan; Quant; Quantitative; Random; Spec; Vol; Volume

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 (Periton fld)Volume of Peritoneal fluidSpecimen vol PrtSpecimen volumeSPECSpecimen volume, Peritoneal fluidVol

Frequently asked questions

Code details

Code34978-7
SystemLOINC
Display nameSpecimen volume (Periton fld)
DescriptionSpecimen volume
Short nameSpecimen vol Prt
ComponentSpecimen volume
PropertyVol
TimingPt
System (specimen)Periton fld
ScaleQn
ClassSPEC
Example unitsmL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.11
Last changed2.73

Consumer names

Specimen volume, Peritoneal fluid

Part names

Specimen volumeVolPtPeriton fldQnVolumePoint in time (spot)Peritoneal 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 34978-7 | HealthAssure