LOINC

LOINC Code 5954-3: Thrombin time Tilt tube (PPP) [Time]

5954-3 is a LOINC code used to identify Thrombin time Tilt tube (PPP) [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 thrombin induced. It is commonly used with the system or sample type PPP.

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 thrombin induced. It is commonly used with the system or sample type PPP.

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: DEPRECATED
  • Method: Tilt tube

What it does not mean

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

Key facts

  • Deprecated Thrombin time in Platelet poor plasma by Coagulation assay
  • Coagulation thrombin induced
  • Coag; Hematology; Heme; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random; TCT; Throm; Thrombin clotting time; Thrombin time; 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

Thrombin time Tilt tube (PPP) [Time]Deprecated Thrombin time in Platelet poor plasma by Coagulation assayDeprecated TT PPP QnCoagulation thrombin inducedCOAGThrombin time, BloodTime

Frequently asked questions

Code details

Code5954-3
SystemLOINC
Display nameThrombin time Tilt tube (PPP) [Time]
DescriptionCoagulation thrombin induced
Short nameDeprecated TT PPP Qn
ComponentCoagulation thrombin induced
PropertyTime
TimingPt
System (specimen)PPP
ScaleQn
MethodTilt tube
ClassCOAG
Example unitss
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0d
Last changed2.40

Consumer names

Thrombin time, Blood

Part names

Coagulation thrombin inducedTimePtPPPQnTilt tubeThrombin timeTime (e.g. seconds)Point in time (spot)Platelet poor plasma

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 5954-3 | HealthAssure