LOINCActiveObservation

LOINC Code 41188-4: Xylose post fast (U) [Mass/Vol]

41188-4 is a LOINC code used to identify Xylose post fast (U) [Mass/Vol] 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 Xylose^post CFst. 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 Xylose^post CFst. 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

  • Xylose [Mass/volume] in Urine --fasting
  • Xylose^post CFst
  • After; Calorie Fast; CHEMISTRY.CHALLENGE TESTING; D-xylose; Fast; Fasting; Level; Mass concentration; p fast; PC; Point in time; PST; QNT; Quan; Quant; Quantitative; Random; UA; UR; Urn; Xylose absorption test

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

Xylose post fast (U) [Mass/Vol]Xylose [Mass/volume] in Urine --fastingXylose p fast Ur-mCncXylose^post CFstCHALXylose after Fast, UrineMCnc

Frequently asked questions

Code details

Code41188-4
SystemLOINC
Display nameXylose post fast (U) [Mass/Vol]
DescriptionXylose^post CFst
Short nameXylose p fast Ur-mCnc
ComponentXylose^post CFst
PropertyMCnc
TimingPt
System (specimen)Urine
ScaleQn
ClassCHAL
Example unitsmg/dL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.34

Consumer names

Xylose after Fast, Urine

Part names

Xylose^post CFstMCncPtUrineQnMass ConcentrationPoint 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.

LOINC Code 41188-4 | HealthAssure