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 14255-4: TSH blocking Ab Qn (S)

Name: LOINC Code 14255-4: TSH blocking Ab Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:24.421Z

14255-4 is a LOINC code used to identify TSH blocking Ab Qn (S) 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 Thyrotropin blocking Ab. It is commonly used with the system or sample type Ser.

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 Thyrotropin blocking Ab. It is commonly used with the system or sample type Ser.

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

What it does not mean

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

Key facts

Thyrotropin blocking Ab [Units/volume] in Serum
Thyrotropin blocking Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Endocrine; Endocrinology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serology; Serum; SR; TBA; Thyroid stimulating hormone; Thyrotropic hormone; TSH; TSH Block

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

TSH blocking Ab Qn (S)Thyrotropin blocking Ab [Units/volume] in SerumTSH Block Ab Ser-aCncThyrotropin blocking AbSEROTSH blocking antibody, BloodACnc

Frequently asked questions

Code details

Code14255-4

SystemLOINC

Display nameTSH blocking Ab Qn (S)

DescriptionThyrotropin blocking Ab

Short nameTSH Block Ab Ser-aCnc

ComponentThyrotropin blocking Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassSERO

Example units% inhibition

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0k

Last changed2.73

Consumer names

TSH blocking antibody, Blood

Part names

Thyrotropin blocking AbACncPtSerQnArbitrary ConcentrationPoint in time (spot)Serum

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.