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 5955-0: Coagulation Thrombin time (PPP control) [Time]

Name: LOINC Code 5955-0: Coagulation Thrombin time (PPP control) [Time]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:39.744Z

5955-0 is a LOINC code used to identify Coagulation Thrombin time (PPP control) [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 Coagulation. It is commonly used with the system or sample type PPP^Control.

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 PPP^Control.

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 in Platelet poor plasma from Control by Coagulation assay
Coagulation
Clot; Clottable; Coag; Coagulation assay; Contrl; Hematology; Heme; Normal; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random; Throm; Tilt tube; TT

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 (PPP control) [Time]Thrombin time in Platelet poor plasma from Control by Coagulation assayTT PPP ContCoagulationCOAGCoagulation, control BloodTime

Frequently asked questions

Code details

Code5955-0

SystemLOINC

Display nameCoagulation Thrombin time (PPP control) [Time]

DescriptionCoagulation

Short nameTT PPP Cont

ComponentCoagulation

PropertyTime

TimingPt

System (specimen)PPP^Control

ScaleQn

MethodCoag.thrombin induced

ClassCOAG

Example unitss

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0d

Last changed2.82

Consumer names

Coagulation, control Blood

Part names

CoagulationTimePtPPP^controlQnCoag.thrombin inducedTime (e.g. seconds)Point in time (spot)Platelet poor plasma^ControlThrombin 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.