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 61191-3: Coagulation aPTT (PPP fetus) [Time]

Name: LOINC Code 61191-3: Coagulation aPTT (PPP fetus) [Time]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:40.899Z

61191-3 is a LOINC code used to identify Coagulation aPTT (PPP fetus) [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^Fetus.

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^Fetus.

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.surface induced

What it does not mean

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

Key facts

aPTT in Platelet poor plasma from Fetus by Coagulation assay
Coagulation
aPTT; Clot; Clottable; Coag; Coagulation assay; Fetal; Gyn; Gynecology; Hematology; Heme; OB; ObGyn; Obstetrics; 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 aPTT (PPP fetus) [Time]aPTT in Platelet poor plasma from Fetus by Coagulation assayaPTT PPP FetusCoagulationCOAGFetal CoagulationTime

Frequently asked questions

Code details

Code61191-3

SystemLOINC

Display nameCoagulation aPTT (PPP fetus) [Time]

DescriptionCoagulation

Short nameaPTT PPP Fetus

ComponentCoagulation

PropertyTime

TimingPt

System (specimen)PPP^Fetus

ScaleQn

MethodCoag.surface induced

ClassCOAG

Example unitss

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.34

Last changed2.82

Consumer names

Fetal Coagulation

Part names

CoagulationTimePtPPP^FetusQnCoag.surface inducedTime (e.g. seconds)Point in time (spot)Platelet poor plasma^FetusaPTT

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.