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 34921-7: Lymphocytes Plasmacytoid/Leukocytes (Bld)

Name: LOINC Code 34921-7: Lymphocytes Plasmacytoid/Leukocytes (Bld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:22.388Z

34921-7 is a LOINC code used to identify Lymphocytes Plasmacytoid/Leukocytes (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 Lymphocytes.plasmacytoid/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 Lymphocytes.plasmacytoid/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: ACTIVE
Order vs observation: Observation

What it does not mean

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

Key facts

Lymphocytes Plasmacytoid/Leukocytes in Blood
Lymphocytes.plasmacytoid/Leukocytes
Blood; HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; Lymp; Lymph; Lympho; Lymphocyte; Lymphs; Lymphs%; Number fraction; Percent; Plasmacoid Lymphs; Point in time; 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

Lymphocytes Plasmacytoid/Leukocytes (Bld)Lymphocytes Plasmacytoid/Leukocytes in BloodPlasmacoid Lymphs NFr BldLymphocytes.plasmacytoid/LeukocytesHEM/BCLymphocytes plasmacytoid/White Blood Cells, BloodNFr

Frequently asked questions

Code details

Code34921-7

SystemLOINC

Display nameLymphocytes Plasmacytoid/Leukocytes (Bld)

DescriptionLymphocytes.plasmacytoid/Leukocytes

Short namePlasmacoid Lymphs NFr Bld

ComponentLymphocytes.plasmacytoid/Leukocytes

PropertyNFr

TimingPt

System (specimen)Bld

ScaleQn

ClassHEM/BC

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.11

Last changed2.79

Consumer names

Lymphocytes plasmacytoid/White Blood Cells, Blood

Part names

Lymphocytes.plasmacytoid/LeukocytesNFrPtBldQnNumber 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.