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 66755-0: Maximum clot firmness after addition of heparinase TEG (Bld) [Length]

Name: LOINC Code 66755-0: Maximum clot firmness after addition of heparinase TEG (Bld) [Length]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:46.212Z

66755-0 is a LOINC code used to identify Maximum clot firmness after addition of heparinase TEG (Bld) [Length] 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 Maximum clot firmness^after addition of heparinase. 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 Maximum clot firmness^after addition of heparinase. 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

What it does not mean

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

Key facts

Maximum clot firmness [Length] in Blood by Thromboelastography --after addition of heparinase
Maximum clot firmness^after addition of heparinase
add heparinase; Blood; CF; COAGULATION; Hematology; Heme; Length; MA; Maximum amplitude; MCF; P Hpase; Point in time; QNT; Quan; Quant; Quantitative; Random; TEG; Thrombelastography; Thrombelastometry; 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

Maximum clot firmness after addition of heparinase TEG (Bld) [Length]Maximum clot firmness [Length] in Blood by Thromboelastography --after addition of heparinaseMCF P Hpase Bld TEGMaximum clot firmness^after addition of heparinaseCOAGMaximum clot firmness after addition of Heparinase, BloodLen

Frequently asked questions

Code details

Code66755-0

SystemLOINC

Display nameMaximum clot firmness after addition of heparinase TEG (Bld) [Length]

DescriptionMaximum clot firmness^after addition of heparinase

Short nameMCF P Hpase Bld TEG

ComponentMaximum clot firmness^after addition of heparinase

PropertyLen

TimingPt

System (specimen)Bld

ScaleQn

MethodThromboelastography

ClassCOAG

Example unitsmm

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.73

Consumer names

Maximum clot firmness after addition of Heparinase, Blood

Part names

Maximum clot firmness^after addition of heparinaseLenPtBldQnThromboelastographyLengthPoint 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.