LOINCActiveBoth

LOINC Code 33947-3: C. difficile toxin neut ab Neut test (S) [Titer]

33947-3 is a LOINC code used to identify C. difficile toxin neut ab Neut test (S) [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 Clostridioides difficile toxin Ab.Neut. 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 Clostridioides difficile toxin Ab.Neut. 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
  • Method: Neut

What it does not mean

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

Key facts

  • Clostridioides difficile toxin neutralizing antibody [Titer] in Serum by Neutralization test
  • Clostridioides difficile toxin Ab.Neut
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; C diff; C diff Tox; C difficile; Clostridium difficile; Conventional virus neutralization test; cVNT; Dilution factor; Dilution Factor (Titer); ID; Infectious Disease; InfectiousDisease; Microbiology; NAb; NEUTRALIZATION; Neutralization test; NT; Point in time; Random; Serum; Serum virus neutralization; SmQn; SR; SVN; Titer; Titered; Titre; Ttr; Virus neutralization test; VNT

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

C. difficile toxin neut ab Neut test (S) [Titer]Clostridioides difficile toxin neutralizing antibody [Titer] in Serum by Neutralization testC diff Tox NAb Titr Ser NtClostridioides difficile toxin Ab.NeutMICROClostridioides difficile toxin neutralizing antibody, BloodTitr

Frequently asked questions

Code details

Code33947-3
SystemLOINC
Display nameC. difficile toxin neut ab Neut test (S) [Titer]
DescriptionClostridioides difficile toxin Ab.Neut
Short nameC diff Tox NAb Titr Ser Nt
ComponentClostridioides difficile toxin Ab.Neut
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodNeut
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.75

Consumer names

Clostridioides difficile toxin neutralizing antibody, Blood

Part names

Clostridioides difficile toxin Ab.NeutTitrPtSerSemiQnNeutTiterPoint in time (spot)SerumNeutralization test

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.

LOINC Code 33947-3 | HealthAssure