LOINCActiveObservation

LOINC Code 10870-4: Xylose 4 Hr post 25 g xylose PO (Bld) [Mass/Vol]

10870-4 is a LOINC code used to identify Xylose 4 Hr post 25 g xylose PO (Bld) [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^4H post 25 g xylose PO. 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^4H post 25 g xylose PO. 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 [Mass/volume] in Blood --4 hours post 25 g xylose PO
  • Xylose^4H post 25 g xylose PO
  • 4h p 25 g Xyl PO; After; Blood; CHEMISTRY.CHALLENGE TESTING; D-xylose; Level; Mass concentration; p 25 g Xyl PO; Point in time; PST; QNT; Quan; Quant; Quantitative; Random; 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 4 Hr post 25 g xylose PO (Bld) [Mass/Vol]Xylose [Mass/volume] in Blood --4 hours post 25 g xylose POXylose 4h p 25 g Xyl PO Bld-mCncXylose^4H post 25 g xylose POCHALXylose 4 hr after 25 g Xylose by mouth, BloodMCnc

Frequently asked questions

Code details

Code10870-4
SystemLOINC
Display nameXylose 4 Hr post 25 g xylose PO (Bld) [Mass/Vol]
DescriptionXylose^4H post 25 g xylose PO
Short nameXylose 4h p 25 g Xyl PO Bld-mCnc
ComponentXylose^4H post 25 g xylose PO
PropertyMCnc
TimingPt
System (specimen)Bld
ScaleQn
ClassCHAL
Example unitsmg/dL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.40

Consumer names

Xylose 4 hr after 25 g Xylose by mouth, Blood

Part names

Xylose^4H post 25 g xylose POMCncPtBldQnMass 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.