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.

LOINCOrder

LOINC Code 55447-7: Coagulation factor VIII Ag (PPP)

Name: LOINC Code 55447-7: Coagulation factor VIII Ag (PPP)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:37.765Z

55447-7 is a LOINC code used to identify Coagulation factor VIII Ag (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 Ag. 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 Ag. 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: DEPRECATED
Order vs observation: Order

What it does not mean

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

Key facts

Deprecated Coagulation factor VIII Ag in Platelet poor plasma

Coagulation factor VIII Ag

Created ONLY for ORDERING in response to request from Canada Health Infoway- a national standardization effort. The dashes in this case mean that the ordering provider does not care what property or scale is used in the observation performed in response to this order. LOINC is still pondering details about how this kind of item should be represented. So the representation might change in the future, but the term will still have the same usage and meaning.

AHF; AHG; Antigen; Antigens; Antihemophilic factor; Antihemophilic globulin; Circulating anticoagulant; Coag; F8; Fac; Fact; Fact VIII; Factor 8; Factor VIII clotting activity; FVIII; Hematology; Heme; Lab orders; LimitedUseLabOrders; Plas; Platelet poor plasma; Point in time; Random; 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 Ag (PPP)Deprecated Coagulation factor VIII Ag in Platelet poor plasmaDeprecated Fact VIII Ag PPPCoagulation factor VIII AgLABORDERSCoagulation Factor VIII antigen, Blood-

Frequently asked questions

Code details

Code55447-7

SystemLOINC

Display nameCoagulation factor VIII Ag (PPP)

DescriptionCoagulation factor VIII Ag

Short nameDeprecated Fact VIII Ag PPP

ComponentCoagulation factor VIII Ag

Property-

TimingPt

System (specimen)PPP

Scale-

ClassLABORDERS

StatusDEPRECATED

Order/ObservationOrder

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.27

Last changed2.66

Consumer names

Coagulation Factor VIII antigen, Blood

Part names

Coagulation factor VIII Ag-PtPPPPoint in time (spot)Platelet poor plasma

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.