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.

LOINCObservation

LOINC Code 26517-3: Granulocytes/100 WBC (CSF)

Name: LOINC Code 26517-3: Granulocytes/100 WBC (CSF)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:14.093Z

26517-3 is a LOINC code used to identify Granulocytes/100 WBC (CSF) 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 Polymorphonuclear cells/100 leukocytes. It is commonly used with the system or sample type CSF.

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 Polymorphonuclear cells/100 leukocytes. It is commonly used with the system or sample type CSF.

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
Order vs observation: Observation

What it does not mean

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

Key facts

Deprecated Polymorphonuclear cells/100 leukocytes in Cerebral spinal fluid
Polymorphonuclear cells/100 leukocytes
100WBC; Cell; Cellularity; Cerebral spinal fluid; Cerebrospinal Fl; HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; Number fraction; Percent; PMN; Point in time; Poly; Polys; QNT; Quan; Quant; Quantitative; Random; Segmented WBC; Spinal Fl; Spinal Fld; Spinal Flu; Spinal 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.

Common synonyms

Granulocytes/100 WBC (CSF)Deprecated Polymorphonuclear cells/100 leukocytes in Cerebral spinal fluidDeprecated Polys/leuk NFr CSFPolymorphonuclear cells/100 leukocytesHEM/BCPolymorphonuclear cells per 100 white blood cells, Spinal fluidNFr

Frequently asked questions

Code details

Code26517-3

SystemLOINC

Display nameGranulocytes/100 WBC (CSF)

DescriptionPolymorphonuclear cells/100 leukocytes

Short nameDeprecated Polys/leuk NFr CSF

ComponentPolymorphonuclear cells/100 leukocytes

PropertyNFr

TimingPt

System (specimen)CSF

ScaleQn

ClassHEM/BC

Example units%

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.00

Last changed2.79

Consumer names

Polymorphonuclear cells per 100 white blood cells, Spinal fluid

Part names

Polymorphonuclear cells/100 leukocytesNFrPtCSFQnNumber FractionPoint in time (spot)Cerebral spinal 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.