LOINCActiveBoth

LOINC Code 41603-2: Bacteria LM Ql (Pleur fld)

41603-2 is a LOINC code used to identify Bacteria LM Ql (Pleur fld) 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 Bacteria. It is commonly used with the system or sample type Plr fld.

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 Bacteria. It is commonly used with the system or sample type Plr fld.

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
  • Method: Microscopy.light

What it does not mean

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

Key facts

  • Bacteria [Presence] in Pleural fluid by Light microscopy
  • Bacteria
  • Bact; ID; Infectious Disease; InfectiousDisease; LM; Lung; Micro; Microbiology; Micros; Microscopic; Ordinal; Pleural; Pleural fluid; Point in time; PR; Pulmonary; Pulmonology; Ql; Qual; Qualitative; Random; Respiratory; Screen; thoracentesis fluid

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

Bacteria LM Ql (Pleur fld)Bacteria [Presence] in Pleural fluid by Light microscopyBacteria Plr Ql MicroBacteriaMICROBacteria, Pleural fluidPrThr

Frequently asked questions

Code details

Code41603-2
SystemLOINC
Display nameBacteria LM Ql (Pleur fld)
DescriptionBacteria
Short nameBacteria Plr Ql Micro
ComponentBacteria
PropertyPrThr
TimingPt
System (specimen)Plr fld
ScaleOrd
MethodMicroscopy.light
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.16
Last changed2.70

Consumer names

Bacteria, Pleural fluid

Part names

BacteriaPrThrPtPlr fldOrdMicroscopy.lightPresence or ThresholdPoint in time (spot)Pleural fluidLight microscopy

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 41603-2 | HealthAssure