LOINCActiveObservation

LOINC Code 60439-7: Large granular lymphocytes/Leukocytes FC (Bld)

60439-7 is a LOINC code used to identify Large granular lymphocytes/Leukocytes FC (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.large granular/Leukocytes. It is commonly used with the system or sample type Bld.

Reviewed by HealthAssure Clinical TeamUpdated 25 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.large granular/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
  • Method: Flow cytometry

What it does not mean

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

Key facts

  • Large granular lymphocytes/Leukocytes in Blood by Flow cytometry (FC)
  • Lymphocytes.large granular/Leukocytes
  • Blood; CELL MARKERS; Dynamic; FC; Leuc; Leuk; Leukocyte; Lg Gran Lymphs; LGL; Lkcs; Lymp; Lymph; Lympho; Lymphocyte; Lymphs; Lymphs%; Number fraction; Percent; 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

Large granular lymphocytes/Leukocytes FC (Bld)Large granular lymphocytes/Leukocytes in Blood by Flow cytometry (FC)Lg Gran Lymphs NFr Bld FCLymphocytes.large granular/LeukocytesCELLMARKLarge granular lymphocytes/White Blood Cells, BloodNFr

Frequently asked questions

Code details

Code60439-7
SystemLOINC
Display nameLarge granular lymphocytes/Leukocytes FC (Bld)
DescriptionLymphocytes.large granular/Leukocytes
Short nameLg Gran Lymphs NFr Bld FC
ComponentLymphocytes.large granular/Leukocytes
PropertyNFr
TimingPt
System (specimen)Bld
ScaleQn
MethodFlow cytometry
ClassCELLMARK
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.34
Last changed2.79

Consumer names

Large granular lymphocytes/White Blood Cells, Blood

Part names

Lymphocytes.large granular/LeukocytesNFrPtBldQnFlow cytometryNumber FractionPoint in time (spot)BloodFlow cytometry (FC)

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.

LOINC Code 60439-7 | HealthAssure