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.

LOINC

LOINC Code 35019-9: Monocytes+Macrophages/100 lymphs (Pleur fld)

Name: LOINC Code 35019-9: Monocytes+Macrophages/100 lymphs (Pleur fld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:22.389Z

35019-9 is a LOINC code used to identify Monocytes+Macrophages/100 lymphs (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 Monocytes+Macrophages/100 lymphocytes. It is commonly used with the system or sample type Plr fld.

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 Monocytes+Macrophages/100 lymphocytes. 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: DEPRECATED

What it does not mean

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

Key facts

Deprecated Monocytes+Macrophages/100 lymphocytes
Monocytes+Macrophages/100 lymphocytes
HEMATOLOGY/CELL COUNTS; Lymp; Lymph; Lympho; Lymphocyte; Lymphs; Lymphs%; Macrop; Macrophage; Macros; Macrphg; Mono; Monocyte; Monos; Monos+Macros; Number Fraction; Percent; Pleural; Pleural fluid; Point in time; QNT; Quan; Quant; Quantitative; Random; 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

Monocytes+Macrophages/100 lymphs (Pleur fld)Deprecated Monocytes+Macrophages/100 lymphocytesDeprecated Monos+Macros Fr PlrMonocytes+Macrophages/100 lymphocytesHEM/BCMonocytes+Macrophages per 100 Lymphocytes, Pleural fluidNFr

Frequently asked questions

Code details

Code35019-9

SystemLOINC

Display nameMonocytes+Macrophages/100 lymphs (Pleur fld)

DescriptionMonocytes+Macrophages/100 lymphocytes

Short nameDeprecated Monos+Macros Fr Plr

ComponentMonocytes+Macrophages/100 lymphocytes

PropertyNFr

TimingPt

System (specimen)Plr fld

ScaleQn

ClassHEM/BC

Example units%

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.11

Last changed2.36

Consumer names

Monocytes+Macrophages per 100 Lymphocytes, Pleural fluid

Part names

Monocytes+Macrophages/100 lymphocytesNFrPtPlr 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.