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 61354-7: Lymphocyte proliferation stimulated by 40 ug phytohemagglutinin (Bld) [Relative ratio]

Name: LOINC Code 61354-7: Lymphocyte proliferation stimulated by 40 ug phytohemagglutinin (Bld) [Relative ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:40.900Z

61354-7 is a LOINC code used to identify Lymphocyte proliferation stimulated by 40 ug phytohemagglutinin (Bld) [Relative ratio] 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. 40 ug phytohemagglutinin stimulation. 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. 40 ug phytohemagglutinin stimulation. 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

Lymphocyte proliferation stimulated by 40 ug phytohemagglutinin in Blood
Lymphocyte proliferation. 40 ug phytohemagglutinin stimulation
Blood; LPA; LPT; LPT 40 ug PHA; LST; Lymphocyte antigen proliferation; Lymphocyte antigen stimulation; mcg; PHA; Point in time; QNT; Quan; Quant; Quantitative; Random; Relative ratio; Serology; Stim; 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 stimulated by 40 ug phytohemagglutinin (Bld) [Relative ratio]Lymphocyte proliferation stimulated by 40 ug phytohemagglutinin in BloodLPT 40 ug PHA BldLymphocyte proliferation. 40 ug phytohemagglutinin stimulationSEROLymphocyte proliferation stimulated by 40 ug phytohemagglutinin, BloodRelRto

Frequently asked questions

Code details

Code61354-7

SystemLOINC

Display nameLymphocyte proliferation stimulated by 40 ug phytohemagglutinin (Bld) [Relative ratio]

DescriptionLymphocyte proliferation. 40 ug phytohemagglutinin stimulation

Short nameLPT 40 ug PHA Bld

ComponentLymphocyte proliferation. 40 ug phytohemagglutinin stimulation

PropertyRelRto

TimingPt

System (specimen)Bld

ScaleQn

ClassSERO

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.34

Last changed2.70

Consumer names

Lymphocyte proliferation stimulated by 40 ug phytohemagglutinin, Blood

Part names

Lymphocyte proliferation. 40 ug phytohemagglutinin stimulationRelRtoPtBldQnRelative RatioPoint 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.