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 52770-5: Clot formation Thromboelastography.rotational.extrinsic coagulation system activated (Bld) [Time]

Name: LOINC Code 52770-5: Clot formation Thromboelastography.rotational.extrinsic coagulation system activated (Bld) [Time]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:36.028Z

52770-5 is a LOINC code used to identify Clot formation Thromboelastography.rotational.extrinsic coagulation system activated (Bld) [Time] 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 formation. 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 formation. 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.rotational.extrinsic coagulation system activated

What it does not mean

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

Key facts

Clot formation [Time] in Blood by Thromboelastography.rotational.extrinsic coagulation system activated
Clot formation
Activ; Activated clotting time; Blood; CFT; Clot time; Hematology; Heme; Kinetics; k-time; Point in time; QNT; Quan; Quant; Quantitative; Random; ROTEM; TEG; TEG rot extrinsic COAg act; TEM; Thrombelastography; Thrombelastometry; Thromboelastometry; 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 formation Thromboelastography.rotational.extrinsic coagulation system activated (Bld) [Time]Clot formation [Time] in Blood by Thromboelastography.rotational.extrinsic coagulation system activatedCFT Bld TEG rot extrinsic COAg actClot formationCOAGClot formation, BloodTime

Frequently asked questions

Code details

Code52770-5

SystemLOINC

Display nameClot formation Thromboelastography.rotational.extrinsic coagulation system activated (Bld) [Time]

DescriptionClot formation

Short nameCFT Bld TEG rot extrinsic COAg act

ComponentClot formation

PropertyTime

TimingPt

System (specimen)Bld

ScaleQn

MethodThromboelastography.rotational.extrinsic coagulation system activated

ClassCOAG

Example unitss

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.24

Last changed2.82

Consumer names

Clot formation, Blood

Part names

Clot formationTimePtBldQnThromboelastography.rotational.extrinsic coagulation system activatedTime (e.g. seconds)Point 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.