LOINCActiveObservation

LOINC Code 3153-4: Specimen weight (24H Specimen)

3153-4 is a LOINC code used to identify Specimen weight (24H Specimen) 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 weight. It is commonly used with the system or sample type XXX.

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 weight. It is commonly used with the system or sample type XXX.

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

  • Weight of 24 hour Specimen
  • Specimen weight
  • 1 day; 24 hours; 24HR; Misc; Miscellaneous; Other; QNT; Quan; Quant; Quantitative; Spec; Specimen wt; To be specified in another part of the message; Unspecified; Wt

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 weight (24H Specimen)Weight of 24 hour SpecimenWt 24h SpecSpecimen weightSPECSpecimen weight, SpecimenMass

Frequently asked questions

Code details

Code3153-4
SystemLOINC
Display nameSpecimen weight (24H Specimen)
DescriptionSpecimen weight
Short nameWt 24h Spec
ComponentSpecimen weight
PropertyMass
Timing24H
System (specimen)XXX
ScaleQn
ClassSPEC
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Specimen weight, Specimen

Part names

Specimen weightMass24HXXXQn24 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 3153-4 | HealthAssure