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LOINC Code 94577-4: Maximum clot strength amplitude (Bld) [Length]

94577-4 is a LOINC code used to identify Maximum clot strength amplitude (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 strength amplitude. 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 strength amplitude. 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.resonance.arachidonate induced

What it does not mean

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

Key facts

Maximum clot strength amplitude [Length] in Blood by Thromboelastography.resonance.arachidonate induced
Maximum clot strength amplitude
The maximum clot strength in the presence of arachidonic acid, as measured by the amplitude of resonance of the blood meniscus as the blood sample clots. In this test, thrombin activity is blocked, and arachidonic acid (AA) is used to activate platelets in order to measure the clot strength based on platelet activation by AA, which result is used to determine the relative contribution of AA-induced platelet activation [LOINC94579-0] to the overall clot strength [LOINC: 91125-5]. This term was created for, but is not limited in use to, the Submitter's test kit, the TEG6s PlateletMapping ADP & AA Assay Cartridge for heparinized blood.
Blood; COAGULATION; Hematology; Heme; Length; Point in time; QNT; Quan; Quant; Quantitative; Random; Res TEG; 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 strength amplitude (Bld) [Length]Maximum clot strength amplitude [Length] in Blood by Thromboelastography.resonance.arachidonate inducedMaximum clot strength amplitude Bld Thromboelastography.resonance.arachidonate inducedMaximum clot strength amplitudeCOAGMaximum clot strength amplitude, BloodLen

Frequently asked questions

Code details

Code94577-4
SystemLOINC
Display nameMaximum clot strength amplitude (Bld) [Length]
DescriptionMaximum clot strength amplitude
Short nameMaximum clot strength amplitude Bld Thromboelastography.resonance.arachidonate induced
ComponentMaximum clot strength amplitude
PropertyLen
TimingPt
System (specimen)Bld
ScaleQn
MethodThromboelastography.resonance.arachidonate induced
ClassCOAG
Example unitsmm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.68
Last changed2.82

Consumer names

Maximum clot strength amplitude, Blood

Part names

Maximum clot strength amplitudeLenPtBldQnThromboelastography.resonance.arachidonate inducedLengthPoint 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.

LOINC Code 94577-4 | HealthAssure