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 51830-8: Prolymphocytes/100 WBC Auto (Bld)

Name: LOINC Code 51830-8: Prolymphocytes/100 WBC Auto (Bld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:35.573Z

51830-8 is a LOINC code used to identify Prolymphocytes/100 WBC Auto (Bld) 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 Prolymphocytes/100 leukocytes. It is commonly used with the system or sample type Bld.

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 Prolymphocytes/100 leukocytes. It is commonly used with the system or sample type Bld.

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
Method: Automated count

What it does not mean

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

Key facts

Deprecated Prolymphocytes/100 leukocytes in Blood by Automated count
Prolymphocytes/100 leukocytes
100WBC; Auto; Automated detection; Blood; Elec; Elect; Electr; HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; Number fraction; Percent; Point in time; Prolymph; Prolymphocyte; Prolymphs; QNT; Quan; Quant; Quantitative; Random; WB; WBC; WBCs; White blood cell; White blood cells; Whole blood

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

Prolymphocytes/100 WBC Auto (Bld)Deprecated Prolymphocytes/100 leukocytes in Blood by Automated countDeprecated Prolymphocytes Fr Bld AutoProlymphocytes/100 leukocytesHEM/BCProlymphocytes per 100 white blood cells, BloodNFr

Frequently asked questions

Code details

Code51830-8

SystemLOINC

Display nameProlymphocytes/100 WBC Auto (Bld)

DescriptionProlymphocytes/100 leukocytes

Short nameDeprecated Prolymphocytes Fr Bld Auto

ComponentProlymphocytes/100 leukocytes

PropertyNFr

TimingPt

System (specimen)Bld

ScaleQn

MethodAutomated count

ClassHEM/BC

Example units%

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.24

Last changed2.36

Consumer names

Prolymphocytes per 100 white blood cells, Blood

Part names

Prolymphocytes/100 leukocytesNFrPtBldQnAutomated countNumber FractionPoint in time (spot)Blood

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.