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.

LOINCActiveBoth

LOINC Code 31091-2: Gentamicin peak post extended interval dosing [Mass/Vol]

Name: LOINC Code 31091-2: Gentamicin peak post extended interval dosing [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:17.663Z

31091-2 is a LOINC code used to identify Gentamicin peak post extended interval dosing [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 Gentamicin^peak post extended interval dosing. It is commonly used with the system or sample type Ser/Plas.

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 Gentamicin^peak post extended interval dosing. It is commonly used with the system or sample type Ser/Plas.

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

Gentamicin [Mass/volume] in Serum or Plasma --peak post extended interval dosing
Gentamicin^peak post extended interval dosing
After; Aminoglycosides; c213; DRUG/TOXICOLOGY; Drugs; EID; Garamycin; Genirr; Genj; Gent; ID; Infectious Disease; InfectiousDisease; Level; Mass concentration; Pk EID; Pl; Plasma; Plsm; Point in time; Post; Postdose; Post-dose; PST; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Gentamicin peak post extended interval dosing [Mass/Vol]Gentamicin [Mass/volume] in Serum or Plasma --peak post extended interval dosingGentamicin Pk EID SerPl-mCncGentamicin^peak post extended interval dosingDRUG/TOXGentamicin Peak after Extended Interval Dosing, BloodMCnc

Frequently asked questions

Code details

Code31091-2

SystemLOINC

Display nameGentamicin peak post extended interval dosing [Mass/Vol]

DescriptionGentamicin^peak post extended interval dosing

Short nameGentamicin Pk EID SerPl-mCnc

ComponentGentamicin^peak post extended interval dosing

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassDRUG/TOX

Example unitsmg/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.07

Last changed2.73

Consumer names

Gentamicin Peak after Extended Interval Dosing, Blood

Part names

Gentamicin^peak post extended interval dosingMCncPtSer/PlasQnMass ConcentrationPoint in time (spot)Serum or Plasma

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.