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.

LOINCActiveBoth

LOINC Code 33895-4: Coagulation (PPP) [Time]

Name: LOINC Code 33895-4: Coagulation (PPP) [Time]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:21.185Z

33895-4 is a LOINC code used to identify Coagulation (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. 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. 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: ACTIVE
Order vs observation: Both
Method: Coag.tissue factor induced.factor substitution.2H post incubation

What it does not mean

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

Key facts

Prothrombin time (PT) factor substitution 2 hours post incubation in Platelet poor plasma by Coagulation assay
Coagulation
120 min; 120 minutes; 120min; 2 hours; After; Clot; Clottable; Coag; Coagulation assay; Fac; Fact; Hematology; Heme; Plas; Platelet poor plasma; Point in time; PST; PT 2h p Inc; QNT; Quan; Quant; Quantitative; Random; Tilt tube

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 (PPP) [Time]Prothrombin time (PT) factor substitution 2 hours post incubation in Platelet poor plasma by Coagulation assayPT 2h p Inc PPPCoagulationCOAGCoagulation, BloodTime

Frequently asked questions

Code details

Code33895-4

SystemLOINC

Display nameCoagulation (PPP) [Time]

DescriptionCoagulation

Short namePT 2h p Inc PPP

ComponentCoagulation

PropertyTime

TimingPt

System (specimen)PPP

ScaleQn

MethodCoag.tissue factor induced.factor substitution.2H post incubation

ClassCOAG

Example unitss

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.82

Consumer names

Coagulation, Blood

Part names

CoagulationTimePtPPPQnCoag.tissue factor induced.factor substitution.2H post incubationTime (e.g. seconds)Point in time (spot)Platelet poor plasmaProthrombin time (PT) factor substitution 2 hours post incubation

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.