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 14138-2: Ketones 30 Min post Unsp challenge Ql (U)

Name: LOINC Code 14138-2: Ketones 30 Min post Unsp challenge Ql (U)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:24.421Z

14138-2 is a LOINC code used to identify Ketones 30 Min post Unsp challenge Ql (U) 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 Ketones^30M post XXX challenge. It is commonly used with the system or sample type Urine.

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 Ketones^30M post XXX challenge. It is commonly used with the system or sample type Urine.

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

Ketones [Presence] in Urine --30 minutes post XXX challenge
Ketones^30M post XXX challenge
Beta-hydroxybutyrate+Acetoacetate+Acetone
30M p chal; Acetest; Acetoacetate; Acetoacetates; Acetone bodies; After; CHEMISTRY.CHALLENGE TESTING; Ketone; Ketone bodies; Ordinal; p chal; Point in time; PR; PST; QL; Qual; Qualitative; Random; Screen; UA; UR; Urn

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

Ketones 30 Min post Unsp challenge Ql (U)Ketones [Presence] in Urine --30 minutes post XXX challengeKetones 30M p chal Ur QlKetones^30M post XXX challengeCHALKetones 30 min after challenge, UrinePrThr

Frequently asked questions

Code details

Code14138-2

SystemLOINC

Display nameKetones 30 Min post Unsp challenge Ql (U)

DescriptionKetones^30M post XXX challenge

Short nameKetones 30M p chal Ur Ql

ComponentKetones^30M post XXX challenge

PropertyPrThr

TimingPt

System (specimen)Urine

ScaleOrd

ClassCHAL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0k

Last changed2.73

Consumer names

Ketones 30 min after challenge, Urine

Part names

Ketones^30M post XXX challengePrThrPtUrineOrdPresence or ThresholdPoint 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.