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 81705-6: BRAF protein Ag Immune stain Ql (Cancer specimen)

Name: LOINC Code 81705-6: BRAF protein Ag Immune stain Ql (Cancer specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:05.776Z

81705-6 is a LOINC code used to identify BRAF protein Ag Immune stain Ql (Cancer specimen) 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 Serine-threonine protein kinase B-raf Ag. It is commonly used with the system or sample type Cancer specimen.

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 Serine-threonine protein kinase B-raf Ag. It is commonly used with the system or sample type Cancer specimen.

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
Method: Immune stain

What it does not mean

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

Key facts

BRAF protein Ag [Presence] in Cancer specimen by Immune stain
Serine-threonine protein kinase B-raf Ag
Antigen; Antigens; BRAF protein; CA; Ca spec; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; Ordinal; p94; Pathology; Point in time; PR; Prot; Prot Kinase; Proto-oncogene B-Raf; QL; Qual; Qualitative; Random; Screen; Ser; Ser-Thr kinase B-raf Ag; Spec; St; Stains; Stn; Thr; v-Raf murine sarcoma viral oncogene homolog B1

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

BRAF protein Ag Immune stain Ql (Cancer specimen)BRAF protein Ag [Presence] in Cancer specimen by Immune stainBRAF protein Ag Ca spec Ql ImStnSerine-threonine protein kinase B-raf AgPATHBRAF protein antigen, Cancer specimenPrThr

Frequently asked questions

Code details

Code81705-6

SystemLOINC

Display nameBRAF protein Ag Immune stain Ql (Cancer specimen)

DescriptionSerine-threonine protein kinase B-raf Ag

Short nameBRAF protein Ag Ca spec Ql ImStn

ComponentSerine-threonine protein kinase B-raf Ag

PropertyPrThr

TimingPt

System (specimen)Cancer specimen

ScaleOrd

MethodImmune stain

ClassPATH

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.56

Last changed2.82

Consumer names

BRAF protein antigen, Cancer specimen

Part names

Serine-threonine protein kinase B-raf AgPrThrPtCancer specimenOrdImmune stainPresence or ThresholdPoint 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.