LOINCActiveObservation

LOINC Code 51607-0: Xylose 3 Hr post Unsp challenge (Bld) [Moles/Vol]

51607-0 is a LOINC code used to identify Xylose 3 Hr post Unsp challenge (Bld) [Moles/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^3H post XXX challenge. It is commonly used with the system or sample type Bld.

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^3H post XXX challenge. It is commonly used with the system or sample type Bld.

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 [Moles/volume] in Blood --3 hours post XXX challenge
  • Xylose^3H post XXX challenge
  • 3h p chal; After; Blood; CHEMISTRY.CHALLENGE TESTING; D-xylose; Level; p chal; Point in time; PST; QNT; Quan; Quant; Quantitative; Random; Substance concentration; WB; Whole blood; 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 3 Hr post Unsp challenge (Bld) [Moles/Vol]Xylose [Moles/volume] in Blood --3 hours post XXX challengeXylose 3h p chal Bld-sCncXylose^3H post XXX challengeCHALXylose 3 hr after challenge, BloodSCnc

Frequently asked questions

Code details

Code51607-0
SystemLOINC
Display nameXylose 3 Hr post Unsp challenge (Bld) [Moles/Vol]
DescriptionXylose^3H post XXX challenge
Short nameXylose 3h p chal Bld-sCnc
ComponentXylose^3H post XXX challenge
PropertySCnc
TimingPt
System (specimen)Bld
ScaleQn
ClassCHAL
Example unitsmmol/L;nmol/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.24
Last changed2.70

Consumer names

Xylose 3 hr after challenge, Blood

Part names

Xylose^3H post XXX challengeSCncPtBldQnSubstance ConcentrationPoint in time (spot)Blood

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 51607-0 | HealthAssure