LOINCActiveObservation

LOINC Code 54208-4: Coagulation (PPP) [Time]

54208-4 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: Observation
  • Method: Coag.surface induced.factor substitution.immediately after addition of factor V depleted plasma+APC

What it does not mean

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

Key facts

aPTT.factor substitution immediately after addition of factor V depleted plasma+APC in Platelet poor plasma by Coagulation assay
Coagulation
Part of the test for screening of factor-V-related APC resistance.
aPTT; aPTT imm FV DP; aPTT imm FV DP+APC; aPTT-FS; Clot; Clottable; Coag; Coagulation assay; Fac; Fact; Factor 5; FV; Hematology; Heme; Immediatedly after 11 addition of; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random; Surf; 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]aPTT.factor substitution immediately after addition of factor V depleted plasma+APC in Platelet poor plasma by Coagulation assayaPTT imm FV DP+APC PPPCoagulationCOAGCoagulation, BloodTime

Frequently asked questions

Code details

Code54208-4
SystemLOINC
Display nameCoagulation (PPP) [Time]
DescriptionCoagulation
Short nameaPTT imm FV DP+APC PPP
ComponentCoagulation
PropertyTime
TimingPt
System (specimen)PPP
ScaleQn
MethodCoag.surface induced.factor substitution.immediately after addition of factor V depleted plasma+APC
ClassCOAG
Example unitss
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.27
Last changed2.82

Consumer names

Coagulation, Blood

Part names

CoagulationTimePtPPPQnCoag.surface induced.factor substitution.immediately after addition of factor V depleted plasma+APCTime (e.g. seconds)Point in time (spot)Platelet poor plasmaaPTT.factor substitution immediately after addition of factor V depleted plasma+APC

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 54208-4 | HealthAssure