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 81698-3: Microsatellite instability marker BAT26 Ql (Cancer specimen)

Name: LOINC Code 81698-3: Microsatellite instability marker BAT26 Ql (Cancer specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:05.776Z

81698-3 is a LOINC code used to identify Microsatellite instability marker BAT26 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 Microsatellite instability marker BAT26. 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 Microsatellite instability marker BAT26. 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

What it does not mean

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

Key facts

Microsatellite instability marker BAT26 in Cancer specimen Qualitative
Microsatellite instability marker BAT26
CA; Ca spec; Finding; Findings; Mark; MSI; MSI mark BAT26; Ordinal; Pathology; Point in time; QL; Qual; Qualitative; Random; Screen; Spec

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

Microsatellite instability marker BAT26 Ql (Cancer specimen)Microsatellite instability marker BAT26 in Cancer specimen QualitativeMSI mark BAT26 Ca spec QlMicrosatellite instability marker BAT26PATHMicrosatellite Instability Marker BAT26, Cancer specimenFind

Frequently asked questions

Code details

Code81698-3

SystemLOINC

Display nameMicrosatellite instability marker BAT26 Ql (Cancer specimen)

DescriptionMicrosatellite instability marker BAT26

Short nameMSI mark BAT26 Ca spec Ql

ComponentMicrosatellite instability marker BAT26

PropertyFind

TimingPt

System (specimen)Cancer specimen

ScaleOrd

ClassPATH

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.56

Last changed2.61

Consumer names

Microsatellite Instability Marker BAT26, Cancer specimen

Part names

Microsatellite instability marker BAT26FindPtCancer specimenOrdFindingPoint 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.