LOINCActiveObservation

LOINC Code 67128-9: Abnormal leukocytes/Leukocytes FC (Specimen)

67128-9 is a LOINC code used to identify Abnormal leukocytes/Leukocytes FC (Specimen) 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 Leukocytes.abnormal/Leukocytes. It is commonly used with the system or sample type XXX.

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 Leukocytes.abnormal/Leukocytes. It is commonly used with the system or sample type XXX.

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

  • Abnormal leukocytes/Leukocytes in Specimen by Flow cytometry (FC)
  • Leukocytes.abnormal/Leukocytes
  • Hematopoietic malignancies can express on their surface particular subsets of cluster of differentiation (CD) antigens which deviate from the expression patterns of normal mature leukocytes. This result indicates the numerical fraction of all leukocytes examined in the flow cytometry study whose expression pattern was abnormal. The specific patterns found are reported under a different result
  • abn; abnorm; Abnormal WBC; CELL MARKERS; Dynamic; FC; Leuc; Leuk; Leukocyte; Lkcs; Misc; Miscellaneous; Number fraction; Other; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Spec; To be specified in another part of the message; Unspecified; 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

Abnormal leukocytes/Leukocytes FC (Specimen)Abnormal leukocytes/Leukocytes in Specimen by Flow cytometry (FC)Abnormal WBC NFr Spec FCLeukocytes.abnormal/LeukocytesCELLMARKAbnormal white blood cells/White Blood Cells, SpecimenNFr

Frequently asked questions

Code details

Code67128-9
SystemLOINC
Display nameAbnormal leukocytes/Leukocytes FC (Specimen)
DescriptionLeukocytes.abnormal/Leukocytes
Short nameAbnormal WBC NFr Spec FC
ComponentLeukocytes.abnormal/Leukocytes
PropertyNFr
TimingPt
System (specimen)XXX
ScaleQn
MethodFlow cytometry
ClassCELLMARK
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.38
Last changed2.79

Consumer names

Abnormal white blood cells/White Blood Cells, Specimen

Part names

Leukocytes.abnormal/LeukocytesNFrPtXXXQnFlow cytometryNumber FractionPoint in time (spot)Flow 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 67128-9 | HealthAssure