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.

LOINCActiveObservation

LOINC Code 30455-0: Neutrophils/Leukocytes (Pleur fld)

Name: LOINC Code 30455-0: Neutrophils/Leukocytes (Pleur fld)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

30455-0 is a LOINC code used to identify Neutrophils/Leukocytes (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 Neutrophils/Leukocytes. 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 Neutrophils/Leukocytes. 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: Observation

What it does not mean

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

Key facts

Neutrophils/Leukocytes in Pleural fluid
Neutrophils/Leukocytes
HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; Lung; Neut; Neutr; Neutrophil; Number fraction; Percent; Pleural; Pleural fluid; PMN; PNM; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; thoracentesis fluid; WBC; WBCs; White blood cell; White blood cells

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Neutrophils/Leukocytes (Pleur fld) (30455-0)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Neutrophils/Leukocytes (Pleur fld)Neutrophils/Leukocytes in Pleural fluidNeutrophils NFr PlrNeutrophils/LeukocytesHEM/BCNeutrophils/White Blood Cells, Pleural fluidNFr

Frequently asked questions

Code details

Code30455-0

SystemLOINC

Display nameNeutrophils/Leukocytes (Pleur fld)

DescriptionNeutrophils/Leukocytes

Short nameNeutrophils NFr Plr

ComponentNeutrophils/Leukocytes

PropertyNFr

TimingPt

System (specimen)Plr fld

ScaleQn

ClassHEM/BC

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.04

Last changed2.79

Consumer names

Neutrophils/White Blood Cells, Pleural fluid

Part names

Neutrophils/leukocytesNFrPtPlr fldQnNumber FractionPoint in time (spot)Pleural fluid

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.