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LOINC Code 14190-3: Phenytoin Free (Sal) [Mass/Vol]

14190-3 is a LOINC code used to identify Phenytoin Free (Sal) [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 Phenytoin.free. It is commonly used with the system or sample type Saliva.

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 Phenytoin.free. It is commonly used with the system or sample type Saliva.

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

  • Phenytoin Free [Mass/volume] in Saliva (oral fluid)
  • Phenytoin.free
  • DI-HYDAN; Dilantin; Dilj; Diphenylhydantoin; DPH; DRUG/TOXICOLOGY; Drugs; Epanutin; Fenantoin; FR; Lehydan; Level; Mass concentration; Non-protein bound; Oral fluid; Phenhydan; Phenytoin Free; PHYT; Point in time; QNT; Quan; Quant; Quantitative; Random; Sal; Sinergina; Zentropil

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

Phenytoin Free (Sal) [Mass/Vol]Phenytoin Free [Mass/volume] in Saliva (oral fluid)Phenytoin Free Sal-mCncPhenytoin.freeDRUG/TOXFree phenytoin, SalivaMCnc

Frequently asked questions

Code details

Code14190-3
SystemLOINC
Display namePhenytoin Free (Sal) [Mass/Vol]
DescriptionPhenytoin.free
Short namePhenytoin Free Sal-mCnc
ComponentPhenytoin.free
PropertyMCnc
TimingPt
System (specimen)Saliva
ScaleQn
ClassDRUG/TOX
Example unitsmg/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Free phenytoin, Saliva

Part names

Phenytoin.freeMCncPtSalivaQnPhenytoin FreeMass 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.