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.

LOINCActiveObservation

LOINC Code 21001-3: Coagulation factor VIII (Specimen) [Interp]

Name: LOINC Code 21001-3: Coagulation factor VIII (Specimen) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

21001-3 is a LOINC code used to identify Coagulation factor VIII (Specimen) [Interp] 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. It is commonly used with the system or sample type XXX.

Reviewed by HealthAssure Clinical TeamUpdated 25 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. It is commonly used with the system or sample type XXX.

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

What it does not mean

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

Key facts

Coagulation factor VIII [Interpretation] in Specimen

Coagulation factor VIII

AHF; AHG; Antihemophilic factor; Antihemophilic globulin; Circulating anticoagulant; Coag; F8; Fac; Fact; Fact VIII; Factor 8; Factor VIII clotting activity; FVIII; Hematology; Heme; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Misc; Miscellaneous; Nominal; Other; Point in time; Random; Spec; Thrombocyte cofactor A; To be specified in another part of the message; Unspecified; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Coagulation factor VIII (Specimen) [Interp] (21001-3)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Coagulation factor VIII (Specimen) [Interp]Coagulation factor VIII [Interpretation] in SpecimenFact VIII Spec-ImpCoagulation factor VIIICOAGCoagulation Factor VIII, SpecimenImp

Frequently asked questions

Code details

Code21001-3

SystemLOINC

Display nameCoagulation factor VIII (Specimen) [Interp]

DescriptionCoagulation factor VIII

Short nameFact VIII Spec-Imp

ComponentCoagulation factor VIII

PropertyImp

TimingPt

System (specimen)XXX

ScaleNom

ClassCOAG

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.69

Consumer names

Coagulation Factor VIII, Specimen

Part names

Coagulation factor VIIIImpPtXXXNomImpression/interpretation of studyPoint in time (spot)

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.