LOINCActiveObservation

LOINC Code 25219-7: Isoniazid Method for Slow-growing mycobacteria.antibiotic concentration at 1.0 ug/mL [Susc]

25219-7 is a LOINC code used to identify Isoniazid Method for Slow-growing mycobacteria.antibiotic concentration at 1.0 ug/mL [Susc] 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 Isoniazid. It is commonly used with the system or sample type Isolate.

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 Isoniazid. It is commonly used with the system or sample type Isolate.

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
  • Method: Method for Slow-growing mycobacteria.antibiotic concentration at 1.0 ug/mL

What it does not mean

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

Key facts

  • Isoniazid [Susceptibility] by Method for Slow-growing mycobacteria.antibiotic concentration at 1.0 ug/mL
  • Isoniazid
  • AFB; ANTIBIOTIC SUSCEPTIBILITIES; AST; Cnc; Conc; Hyzyd; ID; Infectious Disease; InfectiousDisease; INH; Islt; Isol; Isoniaz; Isoniazide; mcg; Myco; Mycobacteria susceptibility; Mycobacterial susceptibility; Nudrazod; Point in time; Random; Slgr Mcbct AB 1.0; SlowMyco; Sus; Suscept; Susceptibilities; Susceptibility; Susceptibilty; TB; Tuberculosis

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

Isoniazid Method for Slow-growing mycobacteria.antibiotic concentration at 1.0 ug/mL [Susc]Isoniazid [Susceptibility] by Method for Slow-growing mycobacteria.antibiotic concentration at 1.0 ug/mLIsoniazid Islt Slgr Mcbct AB 1.0IsoniazidABXBACTSusceptibility to IsoniazidSusc

Frequently asked questions

Code details

Code25219-7
SystemLOINC
Display nameIsoniazid Method for Slow-growing mycobacteria.antibiotic concentration at 1.0 ug/mL [Susc]
DescriptionIsoniazid
Short nameIsoniazid Islt Slgr Mcbct AB 1.0
ComponentIsoniazid
PropertySusc
TimingPt
System (specimen)Isolate
ScaleOrdQn
MethodMethod for Slow-growing mycobacteria.antibiotic concentration at 1.0 ug/mL
ClassABXBACT
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.82

Consumer names

Susceptibility to Isoniazid

Part names

IsoniazidSuscPtIsolateOrdQnMethod for Slow-growing mycobacteria.antibiotic concentration at 1.0 ug/mLSusceptibility (microorganisms)Point 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.

LOINC Code 25219-7 | HealthAssure