LOINCActiveObservation

LOINC Code 35581-8: Hydroxyethyl valine (Bld) [Mass/Vol]

35581-8 is a LOINC code used to identify Hydroxyethyl valine (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 Hydroxyethyl valine. It is commonly used with the system or sample type Bld.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Hydroxyethyl valine. 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

  • Hydroxyethyl valine [Mass/volume] in Blood
  • Hydroxyethyl valine
  • 2-hydroxyethylvaline; Blood; Chemistry; HOEtVal; Level; Mass concentration; N-(2-hydroxyethyl) valine; OH-Ethyl valine; Point in time; QNT; Quan; Quant; Quantitative; Random; Val; WB; Whole blood

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

Hydroxyethyl valine (Bld) [Mass/Vol]Hydroxyethyl valine [Mass/volume] in BloodOH-Ethyl valine Bld-mCncHydroxyethyl valineCHEMHydroxyethyl valine, BloodMCnc

Frequently asked questions

Code details

Code35581-8
SystemLOINC
Display nameHydroxyethyl valine (Bld) [Mass/Vol]
DescriptionHydroxyethyl valine
Short nameOH-Ethyl valine Bld-mCnc
ComponentHydroxyethyl valine
PropertyMCnc
TimingPt
System (specimen)Bld
ScaleQn
ClassCHEM
Example unitsug/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.13
Last changed2.70

Consumer names

Hydroxyethyl valine, Blood

Part names

Hydroxyethyl valineMCncPtBldQnMass 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 35581-8 | HealthAssure