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 75507-4: Coagulation aPTT.lupus sensitive percent correction (PPP) [% diff]

Name: LOINC Code 75507-4: Coagulation aPTT.lupus sensitive percent correction (PPP) [% diff]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:55.159Z

75507-4 is a LOINC code used to identify Coagulation aPTT.lupus sensitive percent correction (PPP) [% diff] 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.surface induced.lupus sensitive percent correction

What it does not mean

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

Key facts

aPTT.lupus sensitive W excess phospholipid percent correction

Coagulation

The aPTT percent correction formula is based on the 2009 International Society on Thrombosis and Haemostasis lupus anticoagulant testing guidelines. [PMID19624461]

aPTT; aPTT-LA; aPTT-LA % correction; Clot; Clottable; Coag; Coagulation assay; Correctn; Hematology; Heme; 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.lupus sensitive percent correction (PPP) [% diff]aPTT.lupus sensitive W excess phospholipid percent correctionaPTT % correctionCoagulationCOAGCoagulation, BloodPctDiff

Frequently asked questions

Code details

Code75507-4

SystemLOINC

Display nameCoagulation aPTT.lupus sensitive percent correction (PPP) [% diff]

DescriptionCoagulation

Short nameaPTT % correction

ComponentCoagulation

PropertyPctDiff

TimingPt

System (specimen)PPP

ScaleQn

MethodCoag.surface induced.lupus sensitive percent correction

ClassCOAG

Example units%

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.50

Last changed2.82

Consumer names

Coagulation, Blood

Part names

CoagulationPctDiffPtPPPQnCoag.surface induced.lupus sensitive percent correctionPercent differencePoint in time (spot)Platelet poor plasmaaPTT.lupus sensitive percent correction

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.