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 10520-5: Coagulation factor Va Ag Immune stain Ql (Tiss)

Name: LOINC Code 10520-5: Coagulation factor Va Ag Immune stain Ql (Tiss)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:19.134Z

10520-5 is a LOINC code used to identify Coagulation factor Va Ag Immune stain Ql (Tiss) 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 Va Ag. It is commonly used with the system or sample type Tiss.

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 Va Ag. It is commonly used with the system or sample type Tiss.

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: Immune stain

What it does not mean

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

Key facts

Coagulation factor Va Ag [Presence] in Tissue by Immune stain
Coagulation factor Va Ag
Antigen; Antigens; Coag; Coagulation Factor VI Ag; Fac; Fact; Hematology; Heme; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; St; Stains; Stn; Tissue; Tissue, unspecified

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 Va Ag Immune stain Ql (Tiss)Coagulation factor Va Ag [Presence] in Tissue by Immune stainCoagulation factor Va Ag Tiss Ql ImStnCoagulation factor Va AgCOAGPrThrPt

Frequently asked questions

Code details

Code10520-5

SystemLOINC

Display nameCoagulation factor Va Ag Immune stain Ql (Tiss)

DescriptionCoagulation factor Va Ag

Short nameCoagulation factor Va Ag Tiss Ql ImStn

ComponentCoagulation factor Va Ag

PropertyPrThr

TimingPt

System (specimen)Tiss

ScaleOrd

MethodImmune stain

ClassCOAG

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0i

Last changed2.82

Consumer names

Coagulation factor Va Ag Immune stain Ql (Tiss)

Part names

Coagulation factor Va AgPrThrPtTissOrdImmune stainPresence or ThresholdPoint in time (spot)Tissue and Smears

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.