LOINCActiveObservation

LOINC Code 34981-1: Specimen volume (Pericard fld)

34981-1 is a LOINC code used to identify Specimen volume (Pericard 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 Pericard 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 Pericard 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 Pericardial fluid
  • Specimen volume
  • Cardio; Cardiology; Heart Disease; Pcar; Pericardial fluid; Point in time; 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 (Pericard fld)Volume of Pericardial fluidSpecimen vol PcarSpecimen volumeSPECSpecimen volume, Pericardial fluidVol

Frequently asked questions

Code details

Code34981-1
SystemLOINC
Display nameSpecimen volume (Pericard fld)
DescriptionSpecimen volume
Short nameSpecimen vol Pcar
ComponentSpecimen volume
PropertyVol
TimingPt
System (specimen)Pericard fld
ScaleQn
ClassSPEC
Example unitsmL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.11
Last changed2.42

Consumer names

Specimen volume, Pericardial fluid

Part names

Specimen volumeVolPtPericard fldQnVolumePoint in time (spot)Pericardial 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 34981-1 | HealthAssure