LOINCActiveObservation

LOINC Code 51138-6: Cytoplasmic CD3 blasts/Blasts (Bld)

51138-6 is a LOINC code used to identify Cytoplasmic CD3 blasts/Blasts (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 Blasts.cytoplasmic CD3/Blasts. 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 Blasts.cytoplasmic CD3/Blasts. 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

  • Cytoplasmic CD3 blasts/Blasts in Blood
  • Blasts.cytoplasmic CD3/Blasts
  • Blast; Blood; CELL MARKERS; cyCD3; cyCD3 Blasts; Cytopl; Cytoplas; Leu4; Leu-4; Number fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; T3; WB; 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

Cytoplasmic CD3 blasts/Blasts (Bld)Cytoplasmic CD3 blasts/Blasts in BloodcyCD3 Blasts/Blasts NFr BldBlasts.cytoplasmic CD3/BlastsCELLMARKCytoplasmic CD3 Blasts/Blasts, BloodNFr

Frequently asked questions

Code details

Code51138-6
SystemLOINC
Display nameCytoplasmic CD3 blasts/Blasts (Bld)
DescriptionBlasts.cytoplasmic CD3/Blasts
Short namecyCD3 Blasts/Blasts NFr Bld
ComponentBlasts.cytoplasmic CD3/Blasts
PropertyNFr
TimingPt
System (specimen)Bld
ScaleQn
ClassCELLMARK
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.79

Consumer names

Cytoplasmic CD3 Blasts/Blasts, Blood

Part names

Blasts.cytoplasmic CD3/BlastsNFrPtBldQnNumber 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.

LOINC Code 51138-6 | HealthAssure