LOINCActiveObservation

LOINC Code 21032-8: Coagulation Thrombin time (Bld) [Interp]

21032-8 is a LOINC code used to identify Coagulation Thrombin time (Bld) [Interp] 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 Coagulation. 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 Coagulation. 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: Coag.thrombin induced

What it does not mean

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

Key facts

  • Thrombin time [Interpretation] in Blood by Coagulation assay
  • Coagulation
  • Blood; Clot; Clottable; Coag; Coagulation assay; Hematology; Heme; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Nominal; Point in time; Random; Throm; Tilt tube; TT; 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

Coagulation Thrombin time (Bld) [Interp]Thrombin time [Interpretation] in Blood by Coagulation assayCoag Bld TT-ImpCoagulationCOAGCoagulation, BloodImp

Frequently asked questions

Code details

Code21032-8
SystemLOINC
Display nameCoagulation Thrombin time (Bld) [Interp]
DescriptionCoagulation
Short nameCoag Bld TT-Imp
ComponentCoagulation
PropertyImp
TimingPt
System (specimen)Bld
ScaleNom
MethodCoag.thrombin induced
ClassCOAG
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.82

Consumer names

Coagulation, Blood

Part names

CoagulationImpPtBldNomCoag.thrombin inducedImpression/interpretation of studyPoint in time (spot)BloodThrombin time

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 21032-8 | HealthAssure