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 17706-3: TPO Ab LA (CSF) [Titer]

Name: LOINC Code 17706-3: TPO Ab LA (CSF) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

17706-3 is a LOINC code used to identify TPO Ab LA (CSF) [Titer] 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 Thyroperoxidase Ab. It is commonly used with the system or sample type CSF.

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 Thyroperoxidase Ab. It is commonly used with the system or sample type CSF.

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: LA

What it does not mean

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

Key facts

Thyroperoxidase Ab [Titer] in Cerebral spinal fluid by Latex agglutination
Thyroperoxidase Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; Dilution factor; Dilution Factor (Titer); Endocrine; Endocrinology; Iodide peroxidase; LAT; Latex agglutination; Neuro; Neurology; Point in time; Random; Serology; SmQn; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Thyroid Microsomal; Thyroid microsomes; Thyroid peroxidase; Titer; Titered; Titre; TPO; Ttr

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 TPO Ab LA (CSF) [Titer] (17706-3)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

TPO Ab LA (CSF) [Titer]Thyroperoxidase Ab [Titer] in Cerebral spinal fluid by Latex agglutinationThyroperoxidase Ab Titr CSF LAThyroperoxidase AbSEROTPO antibody, Spinal fluidTitr

Frequently asked questions

Code details

Code17706-3

SystemLOINC

Display nameTPO Ab LA (CSF) [Titer]

DescriptionThyroperoxidase Ab

Short nameThyroperoxidase Ab Titr CSF LA

ComponentThyroperoxidase Ab

PropertyTitr

TimingPt

System (specimen)CSF

ScaleSemiQn

MethodLA

ClassSERO

Example unitstiter

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.75

Consumer names

TPO antibody, Spinal fluid

Part names

Thyroperoxidase AbTitrPtCSFSemiQnLATiterPoint in time (spot)Cerebral spinal fluidLatex agglutination

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.