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 69016-4: Lymphocyte proliferation.tetanus toxoid.maximum/CD45 FC (Bld)

Name: LOINC Code 69016-4: Lymphocyte proliferation.tetanus toxoid.maximum/CD45 FC (Bld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:48.045Z

69016-4 is a LOINC code used to identify Lymphocyte proliferation.tetanus toxoid.maximum/CD45 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.tetanus toxoid.maximum/CD45. 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.tetanus toxoid.maximum/CD45. 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.tetanus toxoid.maximum/CD45 in Blood by Flow cytometry (FC)
Lymphocyte proliferation.tetanus toxoid.maximum/CD45
B220; Blood; CD45R; CD45RA; CD45RB; CD45RC; CD45RO; Dynamic; FC; LCA; Leukocyte common antigen; LPA; LPT; LPT TT max; LST; Ly5; Lymphocyte antigen proliferation; Lymphocyte antigen stimulation; Microbiology; Number Fraction; Percent; PHA; Point in time; QNT; Quan; Quant; Quantitative; Random; T200; 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.tetanus toxoid.maximum/CD45 FC (Bld)Lymphocyte proliferation.tetanus toxoid.maximum/CD45 in Blood by Flow cytometry (FC)LPT TT max/CD45 Bld FC-NFrLymphocyte proliferation.tetanus toxoid.maximum/CD45MICROLymphocyte proliferation.tetanus toxoid.maximum/CD45, BloodNFr

Frequently asked questions

Code details

Code69016-4

SystemLOINC

Display nameLymphocyte proliferation.tetanus toxoid.maximum/CD45 FC (Bld)

DescriptionLymphocyte proliferation.tetanus toxoid.maximum/CD45

Short nameLPT TT max/CD45 Bld FC-NFr

ComponentLymphocyte proliferation.tetanus toxoid.maximum/CD45

PropertyNFr

TimingPt

System (specimen)Bld

ScaleQn

MethodFlow cytometry

ClassMICRO

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.tetanus toxoid.maximum/CD45, Blood

Part names

Lymphocyte proliferation.tetanus toxoid.maximum/CD45NFrPtBldQnFlow 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.