What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 58229-6: Body weight Measured --when specimen taken

Name: LOINC Code 58229-6: Body weight Measured --when specimen taken
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:39.273Z

58229-6 is a LOINC code used to identify Body weight Measured --when specimen taken 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 Body weight^when specimen taken. It is commonly used with the system or sample type ^Patient.

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 Body weight^when specimen taken. It is commonly used with the system or sample type ^Patient.

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
Method: Measured

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Body weight Measured --when specimen taken
Body weight^when specimen taken
requested as option in new born screening for interpretation of NBS results which may vary with infants weight at the time of the specimen which might be different enough from birth weight to be important.
Bdy weight; bod; Bodies; CLIN; Point in time; QNT; Quan; Quant; Quantitative; Random; Spec; when spec taken; 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

Body weight Measured --when specimen takenWeight when spec taken MeasuredBody weight^when specimen takenCLINBody weight When specimen Taken, MeasuredMassPt

Frequently asked questions

Code details

Code58229-6

SystemLOINC

Display nameBody weight Measured --when specimen taken

DescriptionBody weight^when specimen taken

Short nameWeight when spec taken Measured

ComponentBody weight^when specimen taken

PropertyMass

TimingPt

System (specimen)^Patient

ScaleQn

MethodMeasured

ClassCLIN

Example unitsg

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.30

Last changed2.70

Consumer names

Body weight When specimen Taken, Measured

Part names

Body weight^when specimen takenMassPt^PatientQnMeasuredPoint in time (spot)

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.