LOINCActiveObservation

LOINC Code 34648-6: Specimen weight Unsp time (Stl)

34648-6 is a LOINC code used to identify Specimen weight Unsp time (Stl) 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 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 weight. 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

  • Weight of unspecified time Stool
  • Specimen weight
  • ?Tm; Bowel movement; Faecal; Faeces; Fecal; Feces; QNT; Quan; Quant; Quantitative; Spec; Specimen wt; Stl; Stool = Fecal; 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 Unsp time (Stl)Weight of unspecified time StoolSpecimen wt ?Tm Stl QnSpecimen weightSPECSpecimen weight, StoolMass

Frequently asked questions

Code details

Code34648-6
SystemLOINC
Display nameSpecimen weight Unsp time (Stl)
DescriptionSpecimen weight
Short nameSpecimen wt ?Tm Stl Qn
ComponentSpecimen weight
PropertyMass
TimingXXX
System (specimen)Stool
ScaleQn
ClassSPEC
Example unitsg
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Specimen weight, Stool

Part names

Specimen weightMassXXXStoolQnUnspecified

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 34648-6 | HealthAssure