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.

LOINCActiveBoth

LOINC Code 3227-6: Coagulation factor XI activity Chromogenic method Qn (PPP)

Name: LOINC Code 3227-6: Coagulation factor XI activity Chromogenic method Qn (PPP)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:18.900Z

3227-6 is a LOINC code used to identify Coagulation factor XI activity Chromogenic method Qn (PPP) 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 Coagulation factor XI activity. It is commonly used with the system or sample type PPP.

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 Coagulation factor XI activity. It is commonly used with the system or sample type PPP.

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: Both
Method: Chromo

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Coagulation factor XI activity [Units/volume] in Platelet poor plasma by Chromogenic method
Coagulation factor XI activity
Activ; Actvty; Antihemophilic factor C; Arbitrary concentration; Chromogenic assay; Coag; ENZY; Enzymatic assay; Fac; Fact; Fact XI; Factor 11; FXI; Hematology; Heme; Movements; Plas; Plasma thromboplastin antecedent; Platelet poor plasma; Point in time; PTA; QNT; Quan; Quant; Quantitative; Random

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

Coagulation factor XI activity Chromogenic method Qn (PPP)Coagulation factor XI activity [Units/volume] in Platelet poor plasma by Chromogenic methodFact XI PPP Chro-aCncCoagulation factor XI activityCOAGCoagulation Factor XI Activity, BloodACnc

Frequently asked questions

Code details

Code3227-6

SystemLOINC

Display nameCoagulation factor XI activity Chromogenic method Qn (PPP)

DescriptionCoagulation factor XI activity

Short nameFact XI PPP Chro-aCnc

ComponentCoagulation factor XI activity

PropertyACnc

TimingPt

System (specimen)PPP

ScaleQn

MethodChromo

ClassCOAG

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.73

Consumer names

Coagulation Factor XI Activity, Blood

Part names

Coagulation factor XI activityACncPtPPPQnChromoArbitrary ConcentrationPoint in time (spot)Platelet poor plasmaChromogenic (Enzyme)

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.