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 97911-2: Endogenous thrombin potential after addition of factor VIII Ab Chromogenic method (PPP) [Area under the curve]

Name: LOINC Code 97911-2: Endogenous thrombin potential after addition of factor VIII Ab Chromogenic method (PPP) [Area under the curve]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:31.427Z

97911-2 is a LOINC code used to identify Endogenous thrombin potential after addition of factor VIII Ab Chromogenic method (PPP) [Area under the curve] 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 Endogenous thrombin potential^after addition of Factor VIII Ab. 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 Endogenous thrombin potential^after addition of Factor VIII Ab. 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

Endogenous thrombin potential [Area under the curve] in Platelet poor plasma by Chromogenic method --after addition of factor VIII Ab

Endogenous thrombin potential^after addition of Factor VIII Ab

The endogenous thrombin potential (ETP) is the area under the curve of a thrombin generation test (TGT). It represents thrombin's total enzyme activity and is the most predictive of bleeding and/or thrombosis risk out of all the TGT measurements. [PMID21262433] Measuring the ETP in the presence of Factor VIII antibodies is done to help determine the contribution of Factor VIII to the ETP. If the ETP is significantly decreased in the presence of Factor VIII antibodies, that indicates that Factor VIII had a significant contribution to the baseline ETP. If the ETP does not decrease, then Factor VIII did not have a large contribution. [PMID: 12871369]

AUC; Chromogenic assay; COAGULATION; ENZY; Enzymatic assay; ETP; F8; Fac; Fact; Fact VIII; Factor 8; FVIII; Hematology; Heme; p FVIII Ab; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random; Throm

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

Endogenous thrombin potential after addition of factor VIII Ab Chromogenic method (PPP) [Area under the curve]Endogenous thrombin potential [Area under the curve] in Platelet poor plasma by Chromogenic method --after addition of factor VIII AbETP p FVIII Ab PPP Chro-AUCEndogenous thrombin potential^after addition of Factor VIII AbCOAGEndogenous thrombin potential after addition of factor VIII Ab, BloodTmSCnc

Frequently asked questions

Code details

Code97911-2

SystemLOINC

Display nameEndogenous thrombin potential after addition of factor VIII Ab Chromogenic method (PPP) [Area under the curve]

DescriptionEndogenous thrombin potential^after addition of Factor VIII Ab

Short nameETP p FVIII Ab PPP Chro-AUC

ComponentEndogenous thrombin potential^after addition of Factor VIII Ab

PropertyTmSCnc

TimingPt

System (specimen)PPP

ScaleQn

MethodChromo

ClassCOAG

Example unitsnM*min

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.70

Last changed2.70

Consumer names

Endogenous thrombin potential after addition of factor VIII Ab, Blood

Part names

Endogenous thrombin potential^after addition of Factor VIII AbTmSCncPtPPPQnChromoArea under the curvePoint 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.