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 94578-2: Clot strength Thromboelastography.platelet thromboxane A2 receptor inhibited (Bld) [Length fraction]

Name: LOINC Code 94578-2: Clot strength Thromboelastography.platelet thromboxane A2 receptor inhibited (Bld) [Length fraction]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:24.122Z

94578-2 is a LOINC code used to identify Clot strength Thromboelastography.platelet thromboxane A2 receptor inhibited (Bld) [Length fraction] 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 Clot strength. 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 Clot strength. 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
Method: Thromboelastography.platelet thromboxane A2 receptor inhibited

What it does not mean

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

Key facts

Clot strength [Length fraction] in Blood by Thromboelastography.platelet thromboxane A2 receptor inhibited

Clot strength

A calculated value representing the relative amount of clotting strength (i.e., platelet activity) that would remain in the presence of anti-platelet thromboxane A2 (TXA2)-receptor inhibiting drugs. It is the portion of clotting strength due to factors other than arachidonic acid, which activates platelets by a pathway that includes metabolism to thromboxane A2 (TXA2), which binds to the TXA2 receptor. This result is used to guide anti-platelet therapy decisions. For example, if a patient's baseline relative clotting strength due to AA activation is 25% [LOINC94579-0], then treating that patient with an anti-platelet TXA2 receptor inhibitor would only reduce clotting strength by 25%, leaving a predicted 75% intact.

Blood; COAGULATION; Hematology; Heme; Length Fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Rec; Recept; Receptors; Recp; Recptr; TEG; TEG.throm A2 recep inh; Thrombelastography; Thrombelastometry; Thrombocyte; Thrombocytes; 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

Clot strength Thromboelastography.platelet thromboxane A2 receptor inhibited (Bld) [Length fraction]Clot strength [Length fraction] in Blood by Thromboelastography.platelet thromboxane A2 receptor inhibitedClot strength TXA2-R inhib LenFr BldClot strengthCOAGClot strength, BloodLenFr

Frequently asked questions

Code details

Code94578-2

SystemLOINC

Display nameClot strength Thromboelastography.platelet thromboxane A2 receptor inhibited (Bld) [Length fraction]

DescriptionClot strength

Short nameClot strength TXA2-R inhib LenFr Bld

ComponentClot strength

PropertyLenFr

TimingPt

System (specimen)Bld

ScaleQn

MethodThromboelastography.platelet thromboxane A2 receptor inhibited

ClassCOAG

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.68

Last changed2.82

Consumer names

Clot strength, Blood

Part names

Clot strengthLenFrPtBldQnThromboelastography.platelet thromboxane A2 receptor inhibitedLength fractionPoint 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.