LOINCActiveBoth

LOINC Code 5646-5: Ethylene glycol (S/P/Bld) [Mass/Vol]

5646-5 is a LOINC code used to identify Ethylene glycol (S/P/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 Ethylene glycol. It is commonly used with the system or sample type Ser/Plas/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 Ethylene glycol. It is commonly used with the system or sample type Ser/Plas/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: Both

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Ethylene glycol [Mass/volume] in Serum, Plasma or Blood
  • Ethylene glycol
  • Blood; DRUG/TOXICOLOGY; Drugs; Level; Mass concentration; Pl; PlasBld; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; SerPlBld; Serum; Serum or plasma; Serum, plasma or whole blood; SR; UniversalLabOrders; 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

Ethylene glycol (S/P/Bld) [Mass/Vol]Ethylene glycol [Mass/volume] in Serum, Plasma or BloodEthylene Glycol SerPlBld-mCncEthylene glycolDRUG/TOXEthylene glycol, BloodMCnc

Frequently asked questions

Code details

Code5646-5
SystemLOINC
Display nameEthylene glycol (S/P/Bld) [Mass/Vol]
DescriptionEthylene glycol
Short nameEthylene Glycol SerPlBld-mCnc
ComponentEthylene glycol
PropertyMCnc
TimingPt
System (specimen)Ser/Plas/Bld
ScaleQn
ClassDRUG/TOX
Example unitsmcg/mL; mg/dL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.73

Consumer names

Ethylene glycol, Blood

Part names

Ethylene glycolMCncPtSer/Plas/BldQnMass ConcentrationPoint in time (spot)Serum, Plasma or 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 5646-5 | HealthAssure