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 40539-9: Eosinophils/Leukocytes Manual cnt (Perit dial fld)

Name: LOINC Code 40539-9: Eosinophils/Leukocytes Manual cnt (Perit dial fld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:27.146Z

40539-9 is a LOINC code used to identify Eosinophils/Leukocytes Manual cnt (Perit dial 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 Eosinophils/Leukocytes. It is commonly used with the system or sample type Dial fld prt.

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 Eosinophils/Leukocytes. It is commonly used with the system or sample type Dial fld prt.

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
Method: Manual count

What it does not mean

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

Key facts

Eosinophils/Leukocytes in Peritoneal dialysis fluid by Manual count
Eosinophils/Leukocytes
Diaf; DiafP; Dialysate; Dialysis fluid; Eos; Eosin; Eosino; Eosinophil; Eosins; HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; Manl; Number fraction; Percent; Peritoneal Dialysis fluid; Point in time; QNT; Quan; Quant; Quantitative; Random; 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.

Common synonyms

Eosinophils/Leukocytes Manual cnt (Perit dial fld)Eosinophils/Leukocytes in Peritoneal dialysis fluid by Manual countEosinophil NFr DiafP ManualEosinophils/LeukocytesHEM/BCEosinophils/White Blood Cells, Peritoneal dialysis fluidNFr

Frequently asked questions

Code details

Code40539-9

SystemLOINC

Display nameEosinophils/Leukocytes Manual cnt (Perit dial fld)

DescriptionEosinophils/Leukocytes

Short nameEosinophil NFr DiafP Manual

ComponentEosinophils/Leukocytes

PropertyNFr

TimingPt

System (specimen)Dial fld prt

ScaleQn

MethodManual count

ClassHEM/BC

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.79

Consumer names

Eosinophils/White Blood Cells, Peritoneal dialysis fluid

Part names

Eosinophils/leukocytesNFrPtDial fld prtQnManual countNumber FractionPoint in time (spot)Dialysis fluid peritoneal

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.