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 58493-8: Coagulation factor VIII Ab IA Ql (PPP)

Name: LOINC Code 58493-8: Coagulation factor VIII Ab IA Ql (PPP)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:39.275Z

58493-8 is a LOINC code used to identify Coagulation factor VIII Ab IA Ql (PPP) 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 factor VIII Ab. 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 factor VIII Ab. 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: IA

What it does not mean

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

Key facts

Coagulation factor VIII Ab [Presence] in Platelet poor plasma by Immunoassay

Coagulation factor VIII Ab

ABS; Aby; AHF; AHG; Antby; Anti; Antibodies; Antibody; Antihemophilic factor; Antihemophilic globulin; Autoantibodies; Autoantibody; Circulating anticoagulant; Coag; EIA; ELFA; ELISA; Enzyme immunoassay; F8; Fac; Fact; Fact VIII; Factor 8; Factor VIII clotting activity; FVIII; Hematology; Heme; IAA; MEIA; Ordinal; Plas; Platelet poor plasma; Point in time; PR; QL; Qual; Qualitative; Random; Screen; SUDS; Thrombocyte cofactor A; VIIIC

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 factor VIII Ab IA Ql (PPP)Coagulation factor VIII Ab [Presence] in Platelet poor plasma by ImmunoassayFact VIII Ab PPP Ql IACoagulation factor VIII AbCOAGCoagulation Factor VIII antibody, BloodPrThr

Frequently asked questions

Code details

Code58493-8

SystemLOINC

Display nameCoagulation factor VIII Ab IA Ql (PPP)

DescriptionCoagulation factor VIII Ab

Short nameFact VIII Ab PPP Ql IA

ComponentCoagulation factor VIII Ab

PropertyPrThr

TimingPt

System (specimen)PPP

ScaleOrd

MethodIA

ClassCOAG

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.32

Last changed2.73

Consumer names

Coagulation Factor VIII antibody, Blood

Part names

Coagulation factor VIII AbPrThrPtPPPOrdIAPresence or ThresholdPoint in time (spot)Platelet poor plasmaImmunoassay

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.