What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCObservation

LOINC Code 42935-7: Pyrazinamide 100 ug/mL Slow-growing Mycobacteria [Susc]

Name: LOINC Code 42935-7: Pyrazinamide 100 ug/mL Slow-growing Mycobacteria [Susc]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:28.586Z

42935-7 is a LOINC code used to identify Pyrazinamide 100 ug/mL Slow-growing Mycobacteria [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 Pyrazinamide 100.0 ug/mL. 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 Pyrazinamide 100.0 ug/mL. 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: DEPRECATED
Order vs observation: Observation
Method: Slow-growing Mycobacteria

What it does not mean

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

Key facts

Deprecated Pyrazinamide 100.0 ug/mL [Susceptibility] by Method for Slow-growing mycobacteria
Pyrazinamide 100.0 ug/mL
100 ug/mL; ANTIBIOTIC SUSCEPTIBILITIES; AST; ID; Infectious Disease; InfectiousDisease; Islt; Isol; mcg; Point in time; PZA; Random; Sus; Suscept; Susceptibilities; Susceptibility; Susceptibilty

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

Pyrazinamide 100 ug/mL Slow-growing Mycobacteria [Susc]Deprecated Pyrazinamide 100.0 ug/mL [Susceptibility] by Method for Slow-growing mycobacteriaDeprecated PZA 100 ug/mL Islt SlowMycoPyrazinamide 100.0 ug/mLABXBACTSusceptibility to Pyrazinamide 100 ug/mLSusc

Frequently asked questions

Code details

Code42935-7

SystemLOINC

Display namePyrazinamide 100 ug/mL Slow-growing Mycobacteria [Susc]

DescriptionPyrazinamide 100.0 ug/mL

Short nameDeprecated PZA 100 ug/mL Islt SlowMyco

ComponentPyrazinamide 100.0 ug/mL

PropertySusc

TimingPt

System (specimen)Isolate

ScaleOrdQn

MethodSlow-growing Mycobacteria

ClassABXBACT

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.16

Last changed2.36

Consumer names

Susceptibility to Pyrazinamide 100 ug/mL

Part names

Pyrazinamide 100.0 ug/mLSuscPtIsolateOrdQnSlow-growing MycobacteriaSusceptibility (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.