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 69013-1: Lymphocyte proliferation.phytohemagglutinin.maximum/CD3 FC (Bld)

Name: LOINC Code 69013-1: Lymphocyte proliferation.phytohemagglutinin.maximum/CD3 FC (Bld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:48.045Z

69013-1 is a LOINC code used to identify Lymphocyte proliferation.phytohemagglutinin.maximum/CD3 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 Lymphocyte proliferation.phytohemagglutinin.maximum/CD3. 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 Lymphocyte proliferation.phytohemagglutinin.maximum/CD3. 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

Lymphocyte proliferation.phytohemagglutinin.maximum/CD3 in Blood by Flow cytometry (FC)
Lymphocyte proliferation.phytohemagglutinin.maximum/CD3
Blood; Dynamic; FC; Leu4; Leu-4; LPA; LPT; LPT PHA max; LST; Lymphocyte antigen proliferation; Lymphocyte antigen stimulation; Number fraction; Percent; PHA; Point in time; QNT; Quan; Quant; Quantitative; Random; Serology; 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

Lymphocyte proliferation.phytohemagglutinin.maximum/CD3 FC (Bld)Lymphocyte proliferation.phytohemagglutinin.maximum/CD3 in Blood by Flow cytometry (FC)LPT PHA max/CD3 NFr Bld FCLymphocyte proliferation.phytohemagglutinin.maximum/CD3SEROLymphocyte proliferation.phytohemagglutinin.maximum/CD3, BloodNFr

Frequently asked questions

Code details

Code69013-1

SystemLOINC

Display nameLymphocyte proliferation.phytohemagglutinin.maximum/CD3 FC (Bld)

DescriptionLymphocyte proliferation.phytohemagglutinin.maximum/CD3

Short nameLPT PHA max/CD3 NFr Bld FC

ComponentLymphocyte proliferation.phytohemagglutinin.maximum/CD3

PropertyNFr

TimingPt

System (specimen)Bld

ScaleQn

MethodFlow cytometry

ClassSERO

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.73

Consumer names

Lymphocyte proliferation.phytohemagglutinin.maximum/CD3, Blood

Part names

Lymphocyte proliferation.phytohemagglutinin.maximum/CD3NFrPtBldQnFlow 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.