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 58727-9: Lymphocyte proliferation stimulated by phytohemagglutinin Nar (Bld) [Interp]

Name: LOINC Code 58727-9: Lymphocyte proliferation stimulated by phytohemagglutinin Nar (Bld) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:39.275Z

58727-9 is a LOINC code used to identify Lymphocyte proliferation stimulated by phytohemagglutinin Nar (Bld) [Interp] 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 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.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 phytohemagglutinin [Interpretation] in Blood Narrative
Lymphocyte proliferation.phytohemagglutinin stimulation
Blood; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; LPA; LPT; LPT PHA; LST; Lymphocyte antigen proliferation; Lymphocyte antigen stimulation; Narrative; PHA; PHA mitogen stimulation; Point in time; Random; Report; 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 phytohemagglutinin Nar (Bld) [Interp]Lymphocyte proliferation stimulated by phytohemagglutinin [Interpretation] in Blood NarrativeLPT PHA Bld-ImpLymphocyte proliferation.phytohemagglutinin stimulationSEROInterpretation of Lymphocyte proliferation stimulated by phytohemagglutinin test result, BloodImp

Frequently asked questions

Code details

Code58727-9

SystemLOINC

Display nameLymphocyte proliferation stimulated by phytohemagglutinin Nar (Bld) [Interp]

DescriptionLymphocyte proliferation.phytohemagglutinin stimulation

Short nameLPT PHA Bld-Imp

ComponentLymphocyte proliferation.phytohemagglutinin stimulation

PropertyImp

TimingPt

System (specimen)Bld

ScaleNar

ClassSERO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.32

Last changed2.32

Consumer names

Interpretation of Lymphocyte proliferation stimulated by phytohemagglutinin test result, Blood

Part names

Lymphocyte proliferation.phytohemagglutinin stimulationImpPtBldNarLymphocyte proliferation Phytohemagglutinin StimulationImpression/interpretation of studyPoint 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.