97911-2

LOINC Code


LOINC code97911-2
name
descriptionThe 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. [PMID: 21262433] 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]
statusACTIVE

Fully-Specified Name

componentEndogenous thrombin potential^after addition of Factor VIII Ab
propertyTmSCnc  =  Time substance concentration
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemPPP  =  Platelet poor plasma
scaleQn  =  Quantitative:  The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256
methodChromo  =  Chromogenic/Enzymatic Assay:  To distinguish coagulation assays based on chromogenic (enzymatic) activity.

Additional Names

short nameAUC; 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

Basic Attributes

classCOAG
type1  Laboratory
order vs. observationETP p FVIII Ab
example UCUM unitsnM*min
The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org)

History/Usage

first released
last updated2.7
last change typeADD  - added
change reasonnmol.min/L

Related Names

N

Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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